file.sh

#!/bin/bash

#
# Date: 26/11/2013
# Dimitris Tsironis
# Bash lesson for ECS OSLab
#

# Choice 1
function printPermissions {
  echo "> Printing file's permissions"
  ls -l $path | cut -c 1-10
}
# Choice 2
function changePermissions {
  echo "> Changing permissions"
  echo "> Gimme some permissions:"
  read permissions
  chmod $permissions $path
}
# Choice 3
function showLines {
  echo "> Showing last [n] lines"
  echo "> Gimme how many lines:"
  read lines
  tail -n $lines $path
}
# Choice 4
function copyFiles {
  echo "> Copying files"
  echo "> Give source file:"
  read source
  echo "> Give destination file:"
  read dest
  cp $source $dest
}
# Choice 5
function renameFiles {
  echo "> Renaming files"
  echo "> Give old filename:"
  read source
  echo "> Give new filename:"
  read dest
  mv $source $dest
}
# Choice 6
function showProcesses {
  echo "> Showing user's processes"
  echo "> Give username:"
  read username
  ps -ef | grep $username
}
# Choice 7
function removingFiles {
  echo "> Removing file"
  echo "> Give filename to be deleted:"
  read file
  rm $file
}
# Choice 8
function showFiletype {
  echo "> Showing filetype"
  stat -c%F $path
}
# Choice 9
function killProcesses {
  echo "> Killing process"
  echo "> Gimme a process name:"
  read process
  killall $process
}

echo "Give me a choice:"
echo "  1. Print permissions for all files and subfolders"
echo "  2. Change permissions"
echo "  3. Print the last [n] lines of a file"
echo "  4. Copy a file from a folder to another"
echo "  5. Change name of a file or folder"
echo "  6. Print all processes for a given user"
echo "  7. Delete a given file"
echo "  8. Prin the filetype for a given file"
echo "  9. Kill a process based on its name"
read choice
echo "Give me a file:"
read path

if [ $choice -eq 1 ]
  then
    printPermissions
elif [ $choice -eq 2 ]
  then
    changePermissions
elif [ $choice -eq 3 ]
  then
    showLines
elif [ $choice -eq 4 ]
  then
    copyFiles
elif [ $choice -eq 5 ]
  then
    renameFiles
elif [ $choice -eq 6 ]
  then
    showProcesses
elif [ $choice -eq 7 ]
  then
    removingFiles
elif [ $choice -eq 8 ]
  then
    showFiletype
elif [ $choice -eq 9 ]
  then
    killProcesses
fi