Every item in the special separator in the Linux access character __linux

Source: Internet
Author: User

For example, the environment variable path in Linux is:

/opt/ros/indigo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

If you want to get each of these directories, you can do this in two ways:
1 First Use the SED command to convert the colon to a tab, space, or line break, and then use the For loop to take the value, which is:

For item in  ' echo $PATH | sed ' s/:/\t/g ' doing
    echo-e ' $item
' done

The output is:

/opt/ros/indigo/bin
/usr/local/sbin
/usr/local/bin
/usr/sbin
/usr/bin
/sbin
/usr/games
/usr/local/games

2 The simplest way is to adjust the For loop's internal field separator ifs, set ifs=: you can.

ifs=: For
item in $PATH
did
    echo  "$item"
done

The output is consistent with 1).

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