toolbox/remove-user.sh

   1 #!/bin/sh
   2
   3 if [ -z "$1" ]; then
   4         echo "Syntax: ./remove-user.sh <username>"
   5         exit 1
   6 fi
   7 ETC=$HOME/j/etc
   8 COUNT=`grep -E -c "^$1:" $ETC/passwd`
   9 if [ "$COUNT" -ne "1" ]; then
  10         echo "fatal: user '$1' doesn't appear to exist (or exist multiple times, or contain regexpy characters)."
  11         exit 1
  12 fi
  13 GROUPS=`sed -rn '/[,:]'$1'(,|$)/ s/:.*$// p' $ETC/group`
  14 if [ "$GROUPS" ]; then
  15         echo "User '$1' is still part of these groups:" $GROUPS
  16         echo "fatal: this simplistic script cannot remove users from groups."
  17         exit 1
  18 fi
  19 sed -i "/^$1:/ d" $ETC/passwd
  20 rm $ETC/sshkeys/$1
  21 echo "User (+SSH key) removed."