how to list system users
 

how to list existing users??
i try to write a bash script to remove thumbnails from $HOME directory...
and i need a way to list users

Logged in users or all users?

Logged in users would be easy, not all users. Still, you could check the /etc/shadow file and retrieve the users from there.

Why that complicated?
No need to hunt for names (unless some users have their home
not under home but in some strange location), in which case you
could just go
to find them ...

Cheers,
Tink

awk -F: '$3 > 99 {print $6}' /etc/passwd
what is "'$3 > 99" ??

Make sure that it only lists users that are "human". In Slackware,
all system users (not people) have a UID < 100 ... may vary for
your system, have a look at /etc/passwd. But if you DON'T have people's
in other directories than home, why bother? :) Just use the find.

Or, even more easy (just thought of that now) :}

Cheers,
Tink

i like this one -
find /home -name ".thumbnails" -exec rm -rf {} \;

I'm curious: why do you prefer the more I/O and CPU intense solution over
the plain one that uses shell globbing?


Cheers,
Tink

wanna learn commands

Good enough reason, I guess. And: good on yah! :)


Cheers,
Tink

i try to delete files not accessed for 7 or more days

Cheers,
Tink

+\/.thumbnails/.+" means include path??

It's a regular expression against which all found files (including
their path) are matched; you said you only wanted to delete files which
hadn't been accessed in a week from the .thumbnail directory of any user.

What our find does is to search for all files (-type f) under /home that
have the component /.thumbnails/ in their path (.+ means one or more character)
and that have and access time of over a week (-atime +7).

It does NOT search for a path that looks like that.


Cheers,
Tink

combined these two
rm -rf /home/*/.thumbnails
find /home -name ".thumbnails" -exec rm -rf {} \;

find /home/*/.thumbnails -atime +7 -type f -exec rm -rf {} \;