Cleaning up unwanted files in a LiveUSB











up vote
1
down vote

favorite












After running Disk Usage Analyzer on the file system, I am looking for ways to remove unneeded files on my Live USB.




  1. Firstly, is there anything I can do about the files in the casper archive? For example, I noticed that there exists a directory /rofs, which I'm sure stands for read-only file system, the one stored in the read-only casper file, so I can't removing anything in it. Specifically, I removed LibreOffice yet /rofs/usr/lib/libreoffice takes up 222 MB of precious storage, as does Thunderbird and a bunch of other things.



  2. What can I clear regarding the apt program files. /var/lib/apt/lists takes up 115 MB, and /var/cache/apt (not the archives directory) is 139 MB. The /var/cache/apt folder is made up of several ~35 MB files, and I don't know if they are all necessary:



    ubuntu@ubuntu:/var/cache/apt$ du -ah
    4.0K ./archives/partial
    0 ./archives/lock
    28K ./archives
    4.0K ./typescript
    34M ./srcpkgcache.bin
    31M ./srcpkgcache.bin.ifDvIA
    34M ./pkgcache.bin.3IHVIK
    32K ./pkgcache.bin.h2Zwz7
    36M ./pkgcache.bin
    133M .


  3. I already clear browsing data regularly when I use chrome, so I don't think I have to deal with that much. However, I see that there are cache folders for other programs, and I wish to know if there is a safe way to remove the cache.



Generally, my question revolves around why I have only less than 300 MB on my 4.0 GB USB thumb drive when I only use it for browsing and simple development in python.



Your help is appreciated.










share|improve this question






















  • I face the same problem: had a 1Gb flash drive and was suffering from lack of disk space (but Ubuntu was booting, at least). Now, using a 4Gb flash drive (capped to ~2Gb, as discussion) I'm facing the same problems, although I managed to install Java beyond booting. Something is definitely eating out disk.
    – Tiago Cardoso
    Dec 26 '15 at 18:55












  • If it helps, using df -Th I can see /cow using 100% of available disk space. Question then should be... is it something that could be re-dimentioned?
    – Tiago Cardoso
    Dec 26 '15 at 21:37










  • for the point '2.', simply call apt clean functionality, his goal is to clean /var/cache/apt content : sudo apt-get clean
    – adrenochrome
    Feb 19 '16 at 9:31

















up vote
1
down vote

favorite












After running Disk Usage Analyzer on the file system, I am looking for ways to remove unneeded files on my Live USB.




  1. Firstly, is there anything I can do about the files in the casper archive? For example, I noticed that there exists a directory /rofs, which I'm sure stands for read-only file system, the one stored in the read-only casper file, so I can't removing anything in it. Specifically, I removed LibreOffice yet /rofs/usr/lib/libreoffice takes up 222 MB of precious storage, as does Thunderbird and a bunch of other things.



  2. What can I clear regarding the apt program files. /var/lib/apt/lists takes up 115 MB, and /var/cache/apt (not the archives directory) is 139 MB. The /var/cache/apt folder is made up of several ~35 MB files, and I don't know if they are all necessary:



    ubuntu@ubuntu:/var/cache/apt$ du -ah
    4.0K ./archives/partial
    0 ./archives/lock
    28K ./archives
    4.0K ./typescript
    34M ./srcpkgcache.bin
    31M ./srcpkgcache.bin.ifDvIA
    34M ./pkgcache.bin.3IHVIK
    32K ./pkgcache.bin.h2Zwz7
    36M ./pkgcache.bin
    133M .


  3. I already clear browsing data regularly when I use chrome, so I don't think I have to deal with that much. However, I see that there are cache folders for other programs, and I wish to know if there is a safe way to remove the cache.



Generally, my question revolves around why I have only less than 300 MB on my 4.0 GB USB thumb drive when I only use it for browsing and simple development in python.



Your help is appreciated.










share|improve this question






















  • I face the same problem: had a 1Gb flash drive and was suffering from lack of disk space (but Ubuntu was booting, at least). Now, using a 4Gb flash drive (capped to ~2Gb, as discussion) I'm facing the same problems, although I managed to install Java beyond booting. Something is definitely eating out disk.
    – Tiago Cardoso
    Dec 26 '15 at 18:55












  • If it helps, using df -Th I can see /cow using 100% of available disk space. Question then should be... is it something that could be re-dimentioned?
    – Tiago Cardoso
    Dec 26 '15 at 21:37










  • for the point '2.', simply call apt clean functionality, his goal is to clean /var/cache/apt content : sudo apt-get clean
    – adrenochrome
    Feb 19 '16 at 9:31















up vote
1
down vote

favorite









up vote
1
down vote

favorite











After running Disk Usage Analyzer on the file system, I am looking for ways to remove unneeded files on my Live USB.




  1. Firstly, is there anything I can do about the files in the casper archive? For example, I noticed that there exists a directory /rofs, which I'm sure stands for read-only file system, the one stored in the read-only casper file, so I can't removing anything in it. Specifically, I removed LibreOffice yet /rofs/usr/lib/libreoffice takes up 222 MB of precious storage, as does Thunderbird and a bunch of other things.



  2. What can I clear regarding the apt program files. /var/lib/apt/lists takes up 115 MB, and /var/cache/apt (not the archives directory) is 139 MB. The /var/cache/apt folder is made up of several ~35 MB files, and I don't know if they are all necessary:



    ubuntu@ubuntu:/var/cache/apt$ du -ah
    4.0K ./archives/partial
    0 ./archives/lock
    28K ./archives
    4.0K ./typescript
    34M ./srcpkgcache.bin
    31M ./srcpkgcache.bin.ifDvIA
    34M ./pkgcache.bin.3IHVIK
    32K ./pkgcache.bin.h2Zwz7
    36M ./pkgcache.bin
    133M .


  3. I already clear browsing data regularly when I use chrome, so I don't think I have to deal with that much. However, I see that there are cache folders for other programs, and I wish to know if there is a safe way to remove the cache.



Generally, my question revolves around why I have only less than 300 MB on my 4.0 GB USB thumb drive when I only use it for browsing and simple development in python.



Your help is appreciated.










share|improve this question













After running Disk Usage Analyzer on the file system, I am looking for ways to remove unneeded files on my Live USB.




  1. Firstly, is there anything I can do about the files in the casper archive? For example, I noticed that there exists a directory /rofs, which I'm sure stands for read-only file system, the one stored in the read-only casper file, so I can't removing anything in it. Specifically, I removed LibreOffice yet /rofs/usr/lib/libreoffice takes up 222 MB of precious storage, as does Thunderbird and a bunch of other things.



  2. What can I clear regarding the apt program files. /var/lib/apt/lists takes up 115 MB, and /var/cache/apt (not the archives directory) is 139 MB. The /var/cache/apt folder is made up of several ~35 MB files, and I don't know if they are all necessary:



    ubuntu@ubuntu:/var/cache/apt$ du -ah
    4.0K ./archives/partial
    0 ./archives/lock
    28K ./archives
    4.0K ./typescript
    34M ./srcpkgcache.bin
    31M ./srcpkgcache.bin.ifDvIA
    34M ./pkgcache.bin.3IHVIK
    32K ./pkgcache.bin.h2Zwz7
    36M ./pkgcache.bin
    133M .


  3. I already clear browsing data regularly when I use chrome, so I don't think I have to deal with that much. However, I see that there are cache folders for other programs, and I wish to know if there is a safe way to remove the cache.



Generally, my question revolves around why I have only less than 300 MB on my 4.0 GB USB thumb drive when I only use it for browsing and simple development in python.



Your help is appreciated.







live-usb cleanup






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 18 '12 at 11:09









ladaghini

480718




480718












  • I face the same problem: had a 1Gb flash drive and was suffering from lack of disk space (but Ubuntu was booting, at least). Now, using a 4Gb flash drive (capped to ~2Gb, as discussion) I'm facing the same problems, although I managed to install Java beyond booting. Something is definitely eating out disk.
    – Tiago Cardoso
    Dec 26 '15 at 18:55












  • If it helps, using df -Th I can see /cow using 100% of available disk space. Question then should be... is it something that could be re-dimentioned?
    – Tiago Cardoso
    Dec 26 '15 at 21:37










  • for the point '2.', simply call apt clean functionality, his goal is to clean /var/cache/apt content : sudo apt-get clean
    – adrenochrome
    Feb 19 '16 at 9:31




















  • I face the same problem: had a 1Gb flash drive and was suffering from lack of disk space (but Ubuntu was booting, at least). Now, using a 4Gb flash drive (capped to ~2Gb, as discussion) I'm facing the same problems, although I managed to install Java beyond booting. Something is definitely eating out disk.
    – Tiago Cardoso
    Dec 26 '15 at 18:55












  • If it helps, using df -Th I can see /cow using 100% of available disk space. Question then should be... is it something that could be re-dimentioned?
    – Tiago Cardoso
    Dec 26 '15 at 21:37










  • for the point '2.', simply call apt clean functionality, his goal is to clean /var/cache/apt content : sudo apt-get clean
    – adrenochrome
    Feb 19 '16 at 9:31


















I face the same problem: had a 1Gb flash drive and was suffering from lack of disk space (but Ubuntu was booting, at least). Now, using a 4Gb flash drive (capped to ~2Gb, as discussion) I'm facing the same problems, although I managed to install Java beyond booting. Something is definitely eating out disk.
– Tiago Cardoso
Dec 26 '15 at 18:55






I face the same problem: had a 1Gb flash drive and was suffering from lack of disk space (but Ubuntu was booting, at least). Now, using a 4Gb flash drive (capped to ~2Gb, as discussion) I'm facing the same problems, although I managed to install Java beyond booting. Something is definitely eating out disk.
– Tiago Cardoso
Dec 26 '15 at 18:55














If it helps, using df -Th I can see /cow using 100% of available disk space. Question then should be... is it something that could be re-dimentioned?
– Tiago Cardoso
Dec 26 '15 at 21:37




If it helps, using df -Th I can see /cow using 100% of available disk space. Question then should be... is it something that could be re-dimentioned?
– Tiago Cardoso
Dec 26 '15 at 21:37












for the point '2.', simply call apt clean functionality, his goal is to clean /var/cache/apt content : sudo apt-get clean
– adrenochrome
Feb 19 '16 at 9:31






for the point '2.', simply call apt clean functionality, his goal is to clean /var/cache/apt content : sudo apt-get clean
– adrenochrome
Feb 19 '16 at 9:31












2 Answers
2






active

oldest

votes

















up vote
0
down vote



accepted










You would need to make a custom .iso to modify those files.



See : Can I build a Ubuntu ISO from a manifest?



The root file system is compressed to fit on the iso, but casper mounts the file system ro (rofs).



You can use persistence , but persistence takes up even more space (cow).



How did you make your usb ? The iso should take up only 700 Mb or so, do you have other data stored on the usb ? Persistence ?






share|improve this answer



















  • 1




    I have persistent storage (casper-rw) and I really just installed chromium, vlc, (I left Firefox on,) I removed big apps like Thunderbird and LibreOffice. I'm thinking that there are unused packages (like libraries) left behind from some of those uninstalls.
    – ladaghini
    Mar 18 '12 at 14:57










  • 2.5GB is the maximum capacity, and like I said, I have like 300MB remaining.
    – ladaghini
    Mar 18 '12 at 15:29








  • 1




    2.5 GB is the maximum capacity, which, as I said earlier, I was reaching. What I would like to know is what is filling up that 2.5 GB (which used to be 2.0, but I added another 512 MB) As far as I am concerned, I have fewer programs installed (space usage wise) than a fresh live USB. And yet, even after adding another 512 MB, I have a measly 300 MB left. There must be some useless files just lurking around.
    – ladaghini
    Mar 19 '12 at 14:59










  • The files on the iso are read only, you can not delete them. A cow file system makes a copy of the files and tracks the changes, so it takes a lot of space. en.wikipedia.org/wiki/Copy-on-write Again, you need to either remaster the iso or perform a standard installation, but persistence does not work they way you think it does, thus it is not behaving as you expect.
    – Panther
    Mar 19 '12 at 15:39


















up vote
1
down vote













A quick fix is to reduce the archived journals. On my LiveCD those files occupied 300M. Handy when down to 0.



sudo journalctl --vacuum-size=50M


how to clear journal



Then edit journald.conf



sudo nano /etc/systemd/journald.conf


set to desired value:



#SystemMaxUse=50M



After reboot this setting has no effect on Mint.






share|improve this answer























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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    0
    down vote



    accepted










    You would need to make a custom .iso to modify those files.



    See : Can I build a Ubuntu ISO from a manifest?



    The root file system is compressed to fit on the iso, but casper mounts the file system ro (rofs).



    You can use persistence , but persistence takes up even more space (cow).



    How did you make your usb ? The iso should take up only 700 Mb or so, do you have other data stored on the usb ? Persistence ?






    share|improve this answer



















    • 1




      I have persistent storage (casper-rw) and I really just installed chromium, vlc, (I left Firefox on,) I removed big apps like Thunderbird and LibreOffice. I'm thinking that there are unused packages (like libraries) left behind from some of those uninstalls.
      – ladaghini
      Mar 18 '12 at 14:57










    • 2.5GB is the maximum capacity, and like I said, I have like 300MB remaining.
      – ladaghini
      Mar 18 '12 at 15:29








    • 1




      2.5 GB is the maximum capacity, which, as I said earlier, I was reaching. What I would like to know is what is filling up that 2.5 GB (which used to be 2.0, but I added another 512 MB) As far as I am concerned, I have fewer programs installed (space usage wise) than a fresh live USB. And yet, even after adding another 512 MB, I have a measly 300 MB left. There must be some useless files just lurking around.
      – ladaghini
      Mar 19 '12 at 14:59










    • The files on the iso are read only, you can not delete them. A cow file system makes a copy of the files and tracks the changes, so it takes a lot of space. en.wikipedia.org/wiki/Copy-on-write Again, you need to either remaster the iso or perform a standard installation, but persistence does not work they way you think it does, thus it is not behaving as you expect.
      – Panther
      Mar 19 '12 at 15:39















    up vote
    0
    down vote



    accepted










    You would need to make a custom .iso to modify those files.



    See : Can I build a Ubuntu ISO from a manifest?



    The root file system is compressed to fit on the iso, but casper mounts the file system ro (rofs).



    You can use persistence , but persistence takes up even more space (cow).



    How did you make your usb ? The iso should take up only 700 Mb or so, do you have other data stored on the usb ? Persistence ?






    share|improve this answer



















    • 1




      I have persistent storage (casper-rw) and I really just installed chromium, vlc, (I left Firefox on,) I removed big apps like Thunderbird and LibreOffice. I'm thinking that there are unused packages (like libraries) left behind from some of those uninstalls.
      – ladaghini
      Mar 18 '12 at 14:57










    • 2.5GB is the maximum capacity, and like I said, I have like 300MB remaining.
      – ladaghini
      Mar 18 '12 at 15:29








    • 1




      2.5 GB is the maximum capacity, which, as I said earlier, I was reaching. What I would like to know is what is filling up that 2.5 GB (which used to be 2.0, but I added another 512 MB) As far as I am concerned, I have fewer programs installed (space usage wise) than a fresh live USB. And yet, even after adding another 512 MB, I have a measly 300 MB left. There must be some useless files just lurking around.
      – ladaghini
      Mar 19 '12 at 14:59










    • The files on the iso are read only, you can not delete them. A cow file system makes a copy of the files and tracks the changes, so it takes a lot of space. en.wikipedia.org/wiki/Copy-on-write Again, you need to either remaster the iso or perform a standard installation, but persistence does not work they way you think it does, thus it is not behaving as you expect.
      – Panther
      Mar 19 '12 at 15:39













    up vote
    0
    down vote



    accepted







    up vote
    0
    down vote



    accepted






    You would need to make a custom .iso to modify those files.



    See : Can I build a Ubuntu ISO from a manifest?



    The root file system is compressed to fit on the iso, but casper mounts the file system ro (rofs).



    You can use persistence , but persistence takes up even more space (cow).



    How did you make your usb ? The iso should take up only 700 Mb or so, do you have other data stored on the usb ? Persistence ?






    share|improve this answer














    You would need to make a custom .iso to modify those files.



    See : Can I build a Ubuntu ISO from a manifest?



    The root file system is compressed to fit on the iso, but casper mounts the file system ro (rofs).



    You can use persistence , but persistence takes up even more space (cow).



    How did you make your usb ? The iso should take up only 700 Mb or so, do you have other data stored on the usb ? Persistence ?







    share|improve this answer














    share|improve this answer



    share|improve this answer








    edited Apr 13 '17 at 12:23









    Community

    1




    1










    answered Mar 18 '12 at 13:48









    Panther

    77.2k12156258




    77.2k12156258








    • 1




      I have persistent storage (casper-rw) and I really just installed chromium, vlc, (I left Firefox on,) I removed big apps like Thunderbird and LibreOffice. I'm thinking that there are unused packages (like libraries) left behind from some of those uninstalls.
      – ladaghini
      Mar 18 '12 at 14:57










    • 2.5GB is the maximum capacity, and like I said, I have like 300MB remaining.
      – ladaghini
      Mar 18 '12 at 15:29








    • 1




      2.5 GB is the maximum capacity, which, as I said earlier, I was reaching. What I would like to know is what is filling up that 2.5 GB (which used to be 2.0, but I added another 512 MB) As far as I am concerned, I have fewer programs installed (space usage wise) than a fresh live USB. And yet, even after adding another 512 MB, I have a measly 300 MB left. There must be some useless files just lurking around.
      – ladaghini
      Mar 19 '12 at 14:59










    • The files on the iso are read only, you can not delete them. A cow file system makes a copy of the files and tracks the changes, so it takes a lot of space. en.wikipedia.org/wiki/Copy-on-write Again, you need to either remaster the iso or perform a standard installation, but persistence does not work they way you think it does, thus it is not behaving as you expect.
      – Panther
      Mar 19 '12 at 15:39














    • 1




      I have persistent storage (casper-rw) and I really just installed chromium, vlc, (I left Firefox on,) I removed big apps like Thunderbird and LibreOffice. I'm thinking that there are unused packages (like libraries) left behind from some of those uninstalls.
      – ladaghini
      Mar 18 '12 at 14:57










    • 2.5GB is the maximum capacity, and like I said, I have like 300MB remaining.
      – ladaghini
      Mar 18 '12 at 15:29








    • 1




      2.5 GB is the maximum capacity, which, as I said earlier, I was reaching. What I would like to know is what is filling up that 2.5 GB (which used to be 2.0, but I added another 512 MB) As far as I am concerned, I have fewer programs installed (space usage wise) than a fresh live USB. And yet, even after adding another 512 MB, I have a measly 300 MB left. There must be some useless files just lurking around.
      – ladaghini
      Mar 19 '12 at 14:59










    • The files on the iso are read only, you can not delete them. A cow file system makes a copy of the files and tracks the changes, so it takes a lot of space. en.wikipedia.org/wiki/Copy-on-write Again, you need to either remaster the iso or perform a standard installation, but persistence does not work they way you think it does, thus it is not behaving as you expect.
      – Panther
      Mar 19 '12 at 15:39








    1




    1




    I have persistent storage (casper-rw) and I really just installed chromium, vlc, (I left Firefox on,) I removed big apps like Thunderbird and LibreOffice. I'm thinking that there are unused packages (like libraries) left behind from some of those uninstalls.
    – ladaghini
    Mar 18 '12 at 14:57




    I have persistent storage (casper-rw) and I really just installed chromium, vlc, (I left Firefox on,) I removed big apps like Thunderbird and LibreOffice. I'm thinking that there are unused packages (like libraries) left behind from some of those uninstalls.
    – ladaghini
    Mar 18 '12 at 14:57












    2.5GB is the maximum capacity, and like I said, I have like 300MB remaining.
    – ladaghini
    Mar 18 '12 at 15:29






    2.5GB is the maximum capacity, and like I said, I have like 300MB remaining.
    – ladaghini
    Mar 18 '12 at 15:29






    1




    1




    2.5 GB is the maximum capacity, which, as I said earlier, I was reaching. What I would like to know is what is filling up that 2.5 GB (which used to be 2.0, but I added another 512 MB) As far as I am concerned, I have fewer programs installed (space usage wise) than a fresh live USB. And yet, even after adding another 512 MB, I have a measly 300 MB left. There must be some useless files just lurking around.
    – ladaghini
    Mar 19 '12 at 14:59




    2.5 GB is the maximum capacity, which, as I said earlier, I was reaching. What I would like to know is what is filling up that 2.5 GB (which used to be 2.0, but I added another 512 MB) As far as I am concerned, I have fewer programs installed (space usage wise) than a fresh live USB. And yet, even after adding another 512 MB, I have a measly 300 MB left. There must be some useless files just lurking around.
    – ladaghini
    Mar 19 '12 at 14:59












    The files on the iso are read only, you can not delete them. A cow file system makes a copy of the files and tracks the changes, so it takes a lot of space. en.wikipedia.org/wiki/Copy-on-write Again, you need to either remaster the iso or perform a standard installation, but persistence does not work they way you think it does, thus it is not behaving as you expect.
    – Panther
    Mar 19 '12 at 15:39




    The files on the iso are read only, you can not delete them. A cow file system makes a copy of the files and tracks the changes, so it takes a lot of space. en.wikipedia.org/wiki/Copy-on-write Again, you need to either remaster the iso or perform a standard installation, but persistence does not work they way you think it does, thus it is not behaving as you expect.
    – Panther
    Mar 19 '12 at 15:39












    up vote
    1
    down vote













    A quick fix is to reduce the archived journals. On my LiveCD those files occupied 300M. Handy when down to 0.



    sudo journalctl --vacuum-size=50M


    how to clear journal



    Then edit journald.conf



    sudo nano /etc/systemd/journald.conf


    set to desired value:



    #SystemMaxUse=50M



    After reboot this setting has no effect on Mint.






    share|improve this answer



























      up vote
      1
      down vote













      A quick fix is to reduce the archived journals. On my LiveCD those files occupied 300M. Handy when down to 0.



      sudo journalctl --vacuum-size=50M


      how to clear journal



      Then edit journald.conf



      sudo nano /etc/systemd/journald.conf


      set to desired value:



      #SystemMaxUse=50M



      After reboot this setting has no effect on Mint.






      share|improve this answer

























        up vote
        1
        down vote










        up vote
        1
        down vote









        A quick fix is to reduce the archived journals. On my LiveCD those files occupied 300M. Handy when down to 0.



        sudo journalctl --vacuum-size=50M


        how to clear journal



        Then edit journald.conf



        sudo nano /etc/systemd/journald.conf


        set to desired value:



        #SystemMaxUse=50M



        After reboot this setting has no effect on Mint.






        share|improve this answer














        A quick fix is to reduce the archived journals. On my LiveCD those files occupied 300M. Handy when down to 0.



        sudo journalctl --vacuum-size=50M


        how to clear journal



        Then edit journald.conf



        sudo nano /etc/systemd/journald.conf


        set to desired value:



        #SystemMaxUse=50M



        After reboot this setting has no effect on Mint.







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Nov 21 at 15:50

























        answered Nov 20 at 19:29









        OneArb

        112




        112






























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