Seems every couple months I have to look this up again, so I'm just going to drop it here. If you're having trouble running privileged commands after
su in buster, well... they changed it. For the better, I'm sure, but changed all the same.
su command in buster is provided by the util-linux source package, instead of the shadow source package, and no longer alters the
PATH variable by default. This means that after doing
PATH may not contain directories like
/sbin, and many system administration commands will fail.
There are several workarounds:
su -instead; this launches a login shell, which forces
PATHto be changed, but also changes everything else including the working directory.
sudostill runs commands with an altered
- To get a regular root shell with the correct
PATH, you may use
- To get a login shell as root (equivalent to
su -), you may use
/etc/default/su(create it) to get an approximation of the old behavior. This is documented in su(1).
echo "ALWAYS_SET_PATH yes" >> /etc/default/su