Shell Programming and Scripting

#!/bin/ksh
file_found=`ls name.sh`
found=`echo $?`
if $found -eq 0
then
echo "$file_found is present"
else
echo "name.sh is not present"
fi

bash-2.05$ ./filename.sh
./filename.sh[4]: 0: cannot execute
name.sh is not present
bash-2.05$

 
ls name.sh > /dev/null 2>&1 && echo "name.sh is present" || echo "name.sh not present"

#!/bin/ksh
file_found=`ls name.sh 2> /dev/null`
found=`echo $?`
if [ $found -eq 0 ]
then
echo "$file_found is present"
else
echo "name.sh is not present"
fi

ls: name.sh: No such file or directory

#!/bin/ksh
filename="name.sh"
if [ -f "$[filename}" ]
then
       echo "${filename} is present"
else
       echo "${filename} is not present"
fi