===== BASH For Loop =====
{{tag>Linux}}

Here is an example of a double for loop that will go into each directory of rsyslog and remove the archive files.

<file>
[root@MATX01LIMO01 rsyslog]# pwd
/var/log/rsyslog
</file>

\\

Here is the long written out format for ease of reading;

<code bash>
for i in *
do
	for j in {1..7}
	do
		rm -rf $i/messages.$j.txt
	done
done
</code>

\\

Here is the single line CLI version for understanding where the ";" breaks are;

<file>
[root@MATX01LIMO01 rsyslog]# for i in *; do for j in {1..7}; do rm -rf $i/messages.$j.txt; done; done
</file>

Example of for loop through a bash array for seeing of rsync destination directory is available;

<code bash>
#!/bin/bash

DIRECTORY=(
	/mnt/drive1/folder\ one/
	/mnt/drive2/folder2/
)

for ((i = 0; i < ${#DIRECTORY[@]}; i++))
	do
 		if [ -d "${DIRECTORY[$i]}" ]; then
			echo -e "\n${DIRECTORY[$i]}"
			ls "${DIRECTORY[$i]}"
			# -n = --dry-run and is used for testing
			#rsync -n -v -h -r -P --append --exclude .example1 --exclude example2 /home/USERNAME/SOURCEDIRECTORY "${DIRECTORY[$i]}"
		fi

		if [ ! -d "${DIRECTORY[$i]}" ]; then
			echo -e "\n${DIRECTORY[$i]} is not available"
		fi
	done

echo -e ""

</code>