query about shell

[knzzz]

Hi Team,

I would like to take backup of a folder in case if the folder already exist it should display as folder exists
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dt=`date +%F`
present='/tmp/home_$dt'

if [ ! -d "$present" ] ; then
`cp -pr /home/dtail/testing/global/script/home /tmp/home_$dt`
sleep 8
else

echo "Already /home folder present "

fi
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even though the backup folder created its not displaying the message Already folder present

[stevemowbray]

Replace the single quotes around /tmp/home_$dt with double quotes (") so that $dt gets expanded.

Remove the backticks around the cp.

[dcrdev]

Because single quotes are interpreted literally i.e. variables aren't expanded....

Code: Select all

dt="$(date +%F)"
present="/tmp/home_$dt"

if [ ! -d "$present" ]; then
    cp -pr "/home/dtail/testing/global/script/home" "/tmp/home_$dt"
    sleep 8
else
    echo 'The /home folder is already present!'
fi