notebook/notes/bash/index.md

title	TARGET DECK	FILE TAGS	tags
Bash	Obsidian::STEM	bash	bash

%%ANKI Basic How do you escape a ' within a single-quote string? Back: This is impossible. Reference: Robbins, Arnold D. “GAWK: Effective AWK Programming,” October 2023. https://www.gnu.org/software/gawk/manual/gawk.pdf

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%%ANKI Basic What does the null string refer to? Back: The empty string, i.e. "". Reference: Robbins, Arnold D. “GAWK: Effective AWK Programming,” October 2023. https://www.gnu.org/software/gawk/manual/gawk.pdf

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%%ANKI Basic When does Bash remove null strings from a command? Back: When they occur as part of a non-null command-line argument. Reference: Robbins, Arnold D. “GAWK: Effective AWK Programming,” October 2023. https://www.gnu.org/software/gawk/manual/gawk.pdf

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%%ANKI Basic Why does the following not work correctly?

$ # -F specifies the field separator
$ awk -F"" 'program' files

Back: Bash removes the null string before executing the command. Reference: Robbins, Arnold D. “GAWK: Effective AWK Programming,” October 2023. https://www.gnu.org/software/gawk/manual/gawk.pdf

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