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tldr/pages/common/ifs.md
parthzz d8fb645ac2
ifs: add page (#10775) 
* ifs: add page

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Co-authored-by: Jack Lin <blueskyson1401@gmail.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>
2023-10-03 09:03:11 +05:30

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IFS

IFS (Internal Field Separator) is a special environment variable that defines the delimiter used for word splitting in Unix shells. The default value of IFS is a space, tab, and newline. The three characters serve as delimiters. More information: https://www.gnu.org/software/bash/manual/html_node/Word-Splitting.html.

  • View the current IFS value:

echo "$IFS"

  • Change the IFS value:

IFS="{{:}}"

  • Reset IFS to default:

IFS=$' \t\n'

  • Temporarily change the IFS value in a subshell:

(IFS="{{:}}"; echo "{{one:two:three}}")