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Printers are not uninstalled when a user logs out #93
Description
In a Debian installation, printers are not uninstalled when a user logs out.
The reason is that, apparently, the PAM environment only has the environment variable PATH=/bin:/usr/bin when logging out, and therefore lpadmin cannot be found.
/usr/lib/python3/dist-packages/linuxmusterLinuxclient7/printers.py:
def _uninstallPrinter(name):
logging.info(f"Uninstall Printer {name}")
uninstallCommand = ["timeout", "10", "lpadmin", "-x", name]
FIX:
def _uninstallPrinter(name):
logging.info(f"Uninstall Printer {name}")
uninstallCommand = ["timeout", "10", "/usr/sbin/lpadmin", "-x", name]
Activity
dorianim commentedon Jul 7, 2026
Is
lpadminguaranteed to always be located at/usr/sbin/lpadminon all platforms?garblixa commentedon Jul 8, 2026
@dorianim
That's a good question. In the distributions I maintain, lpadmin is indeed located in /usr/sbin. It would probably be cleaner to either expand the PATH variable when the script is called, or check the standard paths to see where lpadmin is located.
Security + Fix: validate printer args and use absolute lpadmin/lpstat…
Fix: printers are not uninstalled on logout because lpadmin is not in…
Merge pull request #94 from linuxmuster/feat/lmn74-security-and-compat