When su fails...

Sometimes invoking 'su' fails. This can be caused by a number of things.

Sometimes invoking 'su' fails. This can be caused by a number of things. Before you look for the cause you might want to try: "su -m" (Leave the environment unmodified.) This Berkeley 'su' option appears to be an undocumented one of SunOS too.

$ su
$

$ su -
$

$ su -m
Password:

This was first published in November 2002

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