How do I get the current running version of a package in deb file's postinst and preinst script?
I am creating a debian package that discard some database operations carried out in postinst script of the package if its previous version is installed. I googled and found it for RPM but I could not find for debian.
I am wondering if there is an equivalent variable or something of %pre[un] or %post[un] for Debian?
deb packaging
edited Dec 11 '18 at 5:43
muru
1
asked Nov 20 '17 at 8:39
user3038057user3038057
214
add a comment |
I am creating a debian package that discard some database operations carried out in postinst script of the package if its previous version is installed. I googled and found it for RPM but I could not find for debian.
I am wondering if there is an equivalent variable or something of %pre[un] or %post[un] for Debian?
deb packaging
edited Dec 11 '18 at 5:43
muru
1
asked Nov 20 '17 at 8:39
user3038057user3038057
214
add a comment |
I am creating a debian package that discard some database operations carried out in postinst script of the package if its previous version is installed. I googled and found it for RPM but I could not find for debian.
I am wondering if there is an equivalent variable or something of %pre[un] or %post[un] for Debian?
deb packaging
edited Dec 11 '18 at 5:43
muru
1
asked Nov 20 '17 at 8:39
user3038057user3038057
214
I am creating a debian package that discard some database operations carried out in postinst script of the package if its previous version is installed. I googled and found it for RPM but I could not find for debian.
I am wondering if there is an equivalent variable or something of %pre[un] or %post[un] for Debian?
deb packaging
deb packaging
edited Dec 11 '18 at 5:43
muru
1
asked Nov 20 '17 at 8:39
user3038057user3038057
214
edited Dec 11 '18 at 5:43
muru
1
asked Nov 20 '17 at 8:39
user3038057user3038057
214
edited Dec 11 '18 at 5:43
muru
1
edited Dec 11 '18 at 5:43
muru
1
edited Dec 11 '18 at 5:43
muru
1
1
asked Nov 20 '17 at 8:39
user3038057user3038057
214
asked Nov 20 '17 at 8:39
user3038057user3038057
214
asked Nov 20 '17 at 8:39
user3038057user3038057
214
214
add a comment |
add a comment |
1 Answer
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According to the Debian Policy Manual the postinst script is called with the old version number as second argument:
postinst configure most-recently-configured-version
So within your postinst, you simply need to check that argument.
And for preinst:
Run the preinst of the new package:
If the package is being upgraded, call:
new-preinst upgrade old-version
[...]
Otherwise, if the package had some configuration files from a previous version installed (i.e., it is in the “Config-Files” state):
new-preinst install old-version
[...]
Otherwise (i.e., the package was completely purged):
new-preinst install
edited Dec 11 '18 at 5:42
muru
1
answered Dec 11 '18 at 5:32
mestmest
111
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
According to the Debian Policy Manual the postinst script is called with the old version number as second argument:
postinst configure most-recently-configured-version
So within your postinst, you simply need to check that argument.
And for preinst:
Run the preinst of the new package:
If the package is being upgraded, call:
new-preinst upgrade old-version
[...]
Otherwise, if the package had some configuration files from a previous version installed (i.e., it is in the “Config-Files” state):
new-preinst install old-version
[...]
Otherwise (i.e., the package was completely purged):
new-preinst install
edited Dec 11 '18 at 5:42
muru
1
answered Dec 11 '18 at 5:32
mestmest
111
add a comment |
According to the Debian Policy Manual the postinst script is called with the old version number as second argument:
postinst configure most-recently-configured-version
So within your postinst, you simply need to check that argument.
And for preinst:
Run the preinst of the new package:
If the package is being upgraded, call:
new-preinst upgrade old-version
[...]
Otherwise, if the package had some configuration files from a previous version installed (i.e., it is in the “Config-Files” state):
new-preinst install old-version
[...]
Otherwise (i.e., the package was completely purged):
new-preinst install
edited Dec 11 '18 at 5:42
muru
1
answered Dec 11 '18 at 5:32
mestmest
111
add a comment |
According to the Debian Policy Manual the postinst script is called with the old version number as second argument:
postinst configure most-recently-configured-version
So within your postinst, you simply need to check that argument.
And for preinst:
Run the preinst of the new package:
If the package is being upgraded, call:
new-preinst upgrade old-version
[...]
Otherwise, if the package had some configuration files from a previous version installed (i.e., it is in the “Config-Files” state):
new-preinst install old-version
[...]
Otherwise (i.e., the package was completely purged):
new-preinst install
edited Dec 11 '18 at 5:42
muru
1
answered Dec 11 '18 at 5:32
mestmest
111
According to the Debian Policy Manual the postinst script is called with the old version number as second argument:
postinst configure most-recently-configured-version
So within your postinst, you simply need to check that argument.
And for preinst:
Run the preinst of the new package:
If the package is being upgraded, call:
new-preinst upgrade old-version
[...]
Otherwise, if the package had some configuration files from a previous version installed (i.e., it is in the “Config-Files” state):
new-preinst install old-version
[...]
Otherwise (i.e., the package was completely purged):
new-preinst install
edited Dec 11 '18 at 5:42
muru
1
answered Dec 11 '18 at 5:32
mestmest
111
edited Dec 11 '18 at 5:42
muru
1
edited Dec 11 '18 at 5:42
muru
1
edited Dec 11 '18 at 5:42
muru
1
1
answered Dec 11 '18 at 5:32
mestmest
111
answered Dec 11 '18 at 5:32
mestmest
111
answered Dec 11 '18 at 5:32
mestmest
111
111
add a comment |
add a comment |
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