Proces the content of /etc/passwd file field by field Here IFS sets the “internal field delimiter” to “:”, but only inside the while loop. You must NOT reset it to the original value. while IFS=: read name passwd uid gid
‘grep’ Command Examples
Greping beginning of line: $ cat file | grep ‘^text’ x
‘date’ Command Examples
The date and time of the server. $ date Tue Mar 17 18:13:30 CET 2009 Set the date to the date and time shown: $ date -s “11/20/2008 12:48:00” List the time and date in the below format: $ date