You can display, save and restore the value of $IFS using conventional Bash commands, but these functions, which you can add to your ~/.bashrc file make it really easy.
To display $IFS use the function ifs shown above. In the sample output, you can see that it displays the characters and their hexadecimal equivalent.
This function saves it in a variable called $saveIFS:
sifs () { saveIFS=$IFS; }
Use this function to restore it
rifs () { IFS=$saveIFS; }
Add this line in your ~/.bashrc file to save a readonly copy of $IFS:
declare -r roIFS=$IFS
Use this function to restore that one to $IFS
rrifs () { IFS=$roIFS; }
Show Sample Output
This is a slightly modified version of the knoppix5 user oneliner (https://www.commandlinefu.com/commands/view/24571/draw-line-separator). Show Sample Output
No need to fork off a process.
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