On my Ubuntu server there are about 150 shell accounts. All usernames begin with the prefix u12.. I have root access and I am trying to copy a directory named "somefiles" to all the home directories. After copying the directory the user and group ownership of the directory should be changed to user's. Username, group and home-dir name are same. How can this be done?

up vote 2 down vote accepted

Do the copying as the target user. This will automatically make the target files. Make sure that the original files are world-readable (or at least readable by all the target users). Run chmod afterwards if you don't want the copied files to be world-readable.

getent passwd |
awk -F : '$1 ~ /^u12/ {print $1}' |
while IFS= read -r user; do
  su "$user" -c 'cp -Rp /original/location/somefiles ~/'
done
  • +1 for using getent. unlike grepping /etc/passwd, it works with any and all Name Service Switch compatible password database(s) in use on the system, incl. /etc/passwd, ldap, mysql, pgsql, extrausers, db, and others. – cas Sep 22 '12 at 3:41

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