Ubuntu Wiki

Figure out how to set detailed preferences for groups of users:

Description:

Procedure:

• Do something
  • some detail
• Do something else
  • some detail

Comments:

v1

Script to Add users from a CSV File

• #!/bin/bash # Script to add a user to Linux system FILENAME=Students.csv EXIST=Student.Exist

  >$EXIST debug=1 # Test input for a file name and verify it´s existance if [ -z $1 ]; then

  • echo Requires a filename to process exit
  else
  • if [ ! -f $1 ]; then
    • echo File ${FILENAME} does not exists exit
    fi
  # remove space characters from file from the file

  • cat $1 | sed 's/ //g' > $FILENAME

  fi #if [ $(id -u) -eq 1006 ]; then if [ $(id -u) -eq 0 ]; then

  • for d in cat ${FILENAME} do

    • # Get the students name in normal form, first letter capitalized

      n_ln=echo $d | cut -d, -f1 # Lowercase the name and cut out the first 2 characters

      ln2=echo ${n_ln} | tr [A-Z] [a-z] | cut -c 1-2 # Get the first name

      n_fn=echo ${d} | cut -d, -f2 # Lowercase the first name fn6=echo ${n_fn} | tr [A-Z] [a-z] | cut -c 1-6

      username=echo ${fn6}${ln2} period=echo ${d} | cut -d, -f3 password=echo ${d} | cut -d, -f4 if [ $debug -eq 0 ]; then

      • echo First Name $n_fn echo Last Name $n_ln echo Login Name $username echo Period $period echo Password $password echo
      fi if [ $debug -eq 1 ]; then
      • #read -p "Enter username : " username #read -p "Enter password : " password

        egrep "^period${period}" /etc/group >/dev/null if [ $? -ne 0 ]; then

        • echo "period$period does not exists!" echo "Creating group period${period}" groupadd period${period}
        fi

        egrep "^$username" /etc/passwd >/dev/null # if the user exist dump user name out to a file if [ $? -eq 0 ]; then

        • echo "Student $n_fn $n_ln already exists"

          echo "${n_ln},${n_fn},${period},${password}" >> $EXIST

        else
        • pass=$(perl -e 'print crypt($ARGV[0], "password")' $password) useradd -m -c "${n_fn} ${n_ln}" -g period${period} -p $pass $username

          [ $? -eq 0 ] && echo "User ${n_fn} ${n_ln} has been added to system!" || echo "Failed to add a user!"

        fi
      fi
    done
  else
  • echo "Only root may add a user to the system" exit 2
  fi rm $FILENAME

v2

To say the least, the script went though a complete re-write. It is now a menu driven process.

v3

m1

m2

m3