Shell Programming and Scripting

$ file *
backup:               directory
ReadMe.txt:           ISO-8859 text, with CRLF line terminators
Release_1.9.2.zip:    Zip archive data, at least v2.0 to extract
Release_2.0.5.tgz:    gzip compressed data, was "Release_2.0.5.tar", last modified: Mon Jul 22 06:01:48 2013, from Unix

#!/bin/csh

if ($#argv < 1) then
   echo "Usage: $0 file [...]"
   exit 1
endif

foreach file ($*)
    set ft=`file $file | cut -d: -f 2`
    switch ("$ft")
       case "*Zip*":
           echo "$file is a zip file"
           breaksw
       case "*shell script*":
           echo "$file is a shell script"
           breaksw
       case "*ASCII*":
           echo "$file is ascii"
           breaksw
       case "*symbol*":
           echo "$file is a link"
           breaksw
   endsw
end

#!/bin/bash
 #copying the out of ls -l command to a file ls -l > /tmp/tmp.tmp   #initilizing 
values sum=0 d
ir=0 
file=0
link=0   
#reading the file while read line do     
 #getting the first character of each line to check the type of file          
read -n 1 c <<< $line       #checking if the file is a directory or not   
  if [ $c == "d" ]     
 then         ((dir++))       
  echo "[DIR] ${line}/" | cut -d" " --fields="1 9" >> /tmp/dir.tmp      
 elif [ $c == "-" ] #true if the file is a regular file    
 then         ((file++))       
  echo $line | cut -d" " -f8 >> /tmp/file.tmp     
  elif [ $c == "l" ]  #true if the file is a symbolic link     
then         ((link++))     
fi       size=$( echo $line | cut -d" " -f5 )
#getting the size of the file   
  sum=$(( sum+size ))
 #adding the size of all the files 
 done < /tmp/tmp.tmp   cat /tmp/file.tmp 
#output the name of all the files cat /tmp/dir.tmp #output the name of all the directory   echo "Total regular
 files = $file" echo "Total directories = $dir"
 echo "Total symbolic links = $link" 
echo "Total size of regular file = $size"
 #removing the temporary files 
rm /tmp/file.tmp rm /tmp/dir.tmp 
rm /tmp/tmp.tmp