Bash Shell Scripting

Create a new Bash Shell Script eg. loopThroughArray.sh Open the Script with an Editor eg. GEdit Add the array definition through which the script should iterate array=( one two three four five ) The expression ${array[@]} contains all values within the array ${array[@]} Now we create a for loop to iterate through the array   for num in ${array[@]}   do   echo $num   done   Once...

if [ -z "$VARIABLE" ]

If $VARIABLE is not set or empty the if statement above will return true, the -z option tests for a zero-length string, so whether $VARIABLE is not set or empty the ifstatement will return true

for i in $(cat myFile.txt); do echo $i; done

The above code executes a for loop and then echo’s out each line in the file myFile.txt

for fileName in $(ls)
do
echo $fileName
done
or a one liner
for fileName in $(ls); do echo $fileName; done
Replace the ls command with any Linux command