The following syntax is used for bash shell to read a file using while loop:
- while read -r line; do. echo "$line" ; done < input.file.
- while IFS= read -r line; do. echo $line; done < input.file.
- $ while read line; do. echo $line; done < OS.txt.
- #!/bin/bash. filename='OS.txt' n=1. ...
- #!/bin/bash. filename=$1. while read line; do.