Shell Script VI: Loop while

While loop

Basic syntax:

while <condition>
do
     <Command>
done 

The while loop is more used to read the contents of the standard input to implement loops

Example 1: Printing numbers sequentially

#! / bin / bash
#while test
#by sunny
i = 10
while ((i <100));
do
sleep 1
Echo "the num is $ i"
((I ++))
If [$ i -gt 15]; then # i over 15 will stop looping out
Break
Fi
done

Execute sh while1.sh
the num is 10
the num is 11
the num is 12
the num is 13
the num is 14
the num is 15

Shell Script VI: Loop while