for

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

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

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

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

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

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