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To check if a directory exists in a bash shell script you can use the following:

if [ -d "$DIRECTORY" ]; then
# Will enter here if $DIRECTORY exists
fi

Example:
if [ -d "/var/www/html/catur" ]; then
# Will enter here if $DIRECTORY exists
cp /var/www/html/pion/try.jpg /var/www/html/catur/try.jpg
fi

Or to check if a directory doesn’t exist:

if [ ! -d "$DIRECTORY" ]; then
# Will enter here if $DIRECTORY doesn’t exist
fi

Example:
if [ ! -d "/var/www/html/catur" ]; then
# Will enter here if $DIRECTORY exists
mkdir /var/www/html/catur
fi

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