for

Perform a command several times. More information: https://www.gnu.org/software/bash/manual/bash.html#Looping-Constructs.

• Iterate through command line arguments:

for variable; do echo $variable; done

• Execute the given commands for each of the specified items:

for variable in item1 item2 …; do echo "Loop is executed"; done

• Iterate over a given range of numbers:

for variable in {from..to..step}; do echo "Loop is executed"; done

• Iterate over a given list of files:

for variable in path/to/file1 path/to/file2 …; do echo "Loop is executed"; done

• Iterate over a given list of directories:

for variable in path/to/directory1/ path/to/directory2/ …; do echo "Loop is executed"; done

• Perform a given command in every directory:

for variable in */; do (cd "$variable" || continue; echo "Loop is executed") done