shell编程之分隔符

      1 #!/bin/bash

      2 line="root:x:0:0:root:/root:bin/bash"

      3 oldIFS=$IFS

      4 IFS=":"

      5 count=0

      6 for item in $line;

      7 do

      8 [ $count -eq 0 ] && user=$item;

      9 [ $count -eq 6 ] && shell=$item;

     10 let count++

     11 done;

     12 IFS=$oldIFS

     13 echo $user\'s shell is $shell

"test.sh" 13L, 225C written

[root@localhost shell]# ./test.sh 

root's shell is bin/bash

 

      1 #!/bin/bash

      2 oldIFS=$IFS

      3 IFS=$'\n'

      4 for i in `cat /etc/passwd`;

      5 do

      6 echo $i

      7 done;