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#!/bin/bash # Manage the locker of session (make this script executable). # Note : `loginctl list-sessions --no-legend | grep -c lightdm` # is my solution to determine when the session is locked ; # it was found by tries and is probably not the better solution # - # Observed : # - unlocked when lightdm is missing in the return of loginctl # - locked when lightdm is present in the return of loginctl # Here the session is unlocked # ... (what to do before locking) # Lock before continue (here the command may vary) light-locker-command --lock # Here the session is locked # ... (what to do after locking) while [ 1 ] ; do is_locked=$( loginctl list-sessions --no-legend \ | grep -c lightdm ) if [[ $is_locked -eq 0 ]] ; then break fi sleep 0.1s done # Here the session is unlocked again   # Execute after unlocking # ... (what to do after locking) 

#!/bin/bash # Manage the locker of session (make this script executable). # Note : `loginctl list-sessions --no-legend | grep -c lightdm` # is my solution to determine when the session is locked ; # it was found by tries and is probably not the better solution # - # Observed : # - unlocked when lightdm is missing in the return of loginctl # - locked when lightdm is present in the return of loginctl # Here the session is unlocked # ... (what to do before locking) # Lock before continue (here the command may vary) light-locker-command --lock # Here the session is locked # ... (what to do after locking) while [ 1 ] ; do is_locked=$( loginctl list-sessions --no-legend \ | grep -c lightdm ) if [[ $is_locked -eq 0 ]] ; then break fi sleep 0.1s done # Here the session is unlocked again # ... (what to do after unlocking) 

I found another solution to achieve it under Debian 12 with XFCE4 DE (v4.18).

The word of end : with Debian 11, I discovered that the --set parameter of xfconf-query must not embed inner quotes in any case nor multiple command (i.e. CMD1 ; CMD2) because the if statement will considers an empty string. In this case to use a script with spaces in its name we can escape them with backslash prepended. This behavior seems different with Debian 12 with XFCE4 DE (v4.18)

I found another solution to achieve it under Debian (tested with Debian 11/XFCE4 v4.16 and with Debian 12/XFCE4 v4.18).

The word of end : with Debian 11, I discovered that the --set parameter of xfconf-query must not embed inner quotes in any case nor multiple command (i.e. CMD1 ; CMD2) because the if statement will considers an empty string. In this case to use a script with spaces in its name we can escape them with backslash prepended. This behavior seems different with Debian 12.

The word of end : with Debian 11, I discovered that the --set parameter of xfconf-query must not embed inner quotes in any case nor multiple command (i.e. CMD1 ; CMD2) because the if statement will considers an empty string. In this case to use a script with spaces in its name we can escape them with '' prepended. This behavior seems different with Debian 12 with XFCE4 DE (v4.18)

The word of end : with Debian 11, I discovered that the --set parameter of xfconf-query must not embed inner quotes in any case nor multiple command (i.e. CMD1 ; CMD2) because the if statement will considers an empty string. In this case to use a script with spaces in its name we can escape them with backslash prepended. This behavior seems different with Debian 12 with XFCE4 DE (v4.18)