Functions to display, save and restore $IFS

ifs () { echo -n "${IFS}"|hexdump -e '"" 10/1 "'\''%_c'\''\t" "\n"' -e '"" 10/1 "0x%02x\t" "\n\n"'|sed "s/''\|\t0x[^0-9]//g; $,/^$/d"
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; }
Sample Output
' '     '\t'    '\n'
0x20    0x09    0x0a

2
By: dennisw
2009-10-10 22:41:35

What Others Think

Accidentally I have come across this website and we can see so many Unix commands through this diamond rings website. The above one provides the commands for functions to display, save and restore $IFS. The sample output gives more clarity to these commands. Keep sharing more updates here.
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pugpuppies95 · 30 weeks and 5 days ago

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