Unix Shell read file in line and parse it

Read file in line:

while read fname
do
  echo $fname
done < /etc/passwd

This snippet means printout file and the result of each row is like the following one:

: as separator, the 1st column is user name, the 6th column is home directory

list:x:38:38:Mailing List Manager:/var/list:/bin/sh

If we want to printout the 1st & 6th column, we need use parser.

then do as follows:

while read fname
do
  echo "$fname"|cut -d: -f1,6
done < /etc/passwd

-d:define separator as :, -f1,6: designate the 1st & 6th column.

there is another efficient way -- using awkfilter

while read fname
do 
   echo $fname|awk -F:'{print $1,$6}'
done < /etc/passwd