I've already written a small tutorial about finding out if a file exists or not under Linux / UNIX bash shell. However, couple of our regular readers like to know more about a directory checking using if and test shell command.
General syntax to see if a directory exists or not
[ -d directory ]
OR
test directory
See if a directory exists or not with NOT operator:
[ ! -d directory ]
OR
! test directory
Find out if /tmp directory exists or not
Type the following command:
$ [ ! -d /tmp ] && echo 'Directory /tmp not found'
OR
$ [ -d /tmp ] && echo 'Directory found' || echo 'Directory /tmp not found'
Sample Shell Script to gives message if directory exists
Here is a sample shell script:
#!/bin/bash DIR="$1" if [ $# -ne 1 ] then echo "Usage: $0 {dir-name}" exit 1 fi if [ -d "$DIR" ] then echo "$DIR directory exists!" else echo "$DIR directory not found!" fi
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- Last Updated: Nov/16/2008
{ 1 comment… read it below or add one }
Dear Friends,
We can do the same thing to check a file exist or not by modifying the “if” loop like the following.
!/bin/bash
FILE=”$1″
if [ $# -ne 1 ]
then
echo “Usage: $0 {file-name}”
exit 1
fi
if [ -f "$FILE" ]
then
echo “$FILE file exists!”
else
echo “$FILE file not found!”
fi