bash while do code example

Example 1: while loop bash

while true;
do
	#code
done

Example 2: while loop shell script

#!/bin/sh

a=0

while [ $a -lt 10 ]
do
   echo $a
   a=`expr $a + 1`
done

Example 3: linux while loop

while true;
do
	#code
;done

Example 4: for while bash

Use for in bash for iterating words in a string or values in an array as:
for value in {1, 2, 3}; do echo $value; done
for value in $(cat arguments_files.txt); do [some_command]; done
And use while for iterating lines from a pipe output as:
cat arguments_file.txt | while read line; do [some_command]; done