To implement the unix commands in shell scripts - Beginners / Lab Assignments Source Code in C

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Home » C Home » Beginners / Lab Assignments Home » To implement the unix commands in shell scripts

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Title	To implement the unix commands in shell scripts
Author	Dhanasekar-lecturer/csice/ooty
Author Email	dhanasekar_kongu [at] rediffmail.com
Description	This program to implement the all unix basic commands into shell scripts(mainly easy to understand the unix end users)
Category	C » Beginners / Lab Assignments
Hits	365016
Code	Select and Copy the Code
true=y while [ "$true" = "y" ] do echo Enter the option echo "MENU 1.list 2.freespace 3.who 4.who am i 5.create a new file 6.oening file 7.delete the file 8.create a directory 9.delete a directory 10.copy the file(same directory) 11.move the file( -do-) 12.clear the screen 13.curect working directory 14.display your shell type" echo Enter a number while read num do case "$num" in 1) ls -al \| more echo pree ctrl-d;; 2) df . echo pree ctrl-d;; 3) who echo pree ctrl-d;; 4) who am i echo pree ctrl-d;; 5) echo enter the file name read fname if [ -f $fname ] then echo already exit echo pree ctrl-d else echo type the file contents fi cat > $fname ;; 6) echo enter the file name read fname if [ ! -f $fname ] then echo no file such a directory echo pree ctrl-d else echo pls wait... file opening echo pree ctrl-d fi cat $fname ;; 7) echo enter the deleting file name read dname if [ ! -f dname ] then echo file deleted... echo pree ctrl-d else echo no file such a directory echo pree ctrl-d fi rm $dname ;; 8) echo Enter the directory name read dname if [ -p $dname ] then echo directory already exits echo pree ctrl-d else echo directory creating echo pree ctrl-d fi mkdir $dname ;; 9) echo enter the directory name read dname if [ ! -p $dname ] then echo pls wait.. deleting echo pree ctrl-d else echo no such directory echo pree ctrl-d fi rmdir $dname ;; 10) echo enter the sourec and destination file read sfile dfile if [ -f $dfile ] then echo destination file is already exists echo pree ctrl-d elif [ ! -f $sfile ] then echo no $sfile source file echo pree ctrl-d else echo no problem... copied echo pree ctrl-d fi cp $sfile $dfile ;; 11) echo enter the sourec and destination file read sfile dfile if [ -f $dfile ] then echo destination file is already exists echo pree ctrl-d elif [ ! -f $sfile ] then echo no $sfile source file echo pree ctrl-d else echo no problem... moving echo pree ctrl-d fi mv $sfile $dfile ;; 12) tput clear echo pree ctrl-d;; 13) pwd echo pree ctrl-d;; 14) echo $SHELL echo pree ctrl-d;; ) echo "$cmd: No such command" ;; esac done echo do you continue again to press [y/n]: read yn case $yn in y \| Y) ture=y ;; n \| N) true=n ;; ) ture=n ;; esac done echo "All done"

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