64 lines
1.6 KiB
Groff
64 lines
1.6 KiB
Groff
.\" Copyright (c) 2023–2024 DTB <trinity@trinity.moe>
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.\" Copyright (c) 2023–2024 Emma Tebibyte <emma@tebibyte.media>
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.\"
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.\" This work is licensed under CC BY-SA 4.0. To see a copy of this license,
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.\" visit <http://creativecommons.org/licenses/by-sa/4.0/>.
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.TH STRCMP 1
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.SH NAME
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strcmp \(en compare strings
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.SH SYNOPSIS
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strcmp
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.RM [ string ]
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.RB [ strings... ]
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.SH DESCRIPTION
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Check whether string arguments are the same.
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.SH DIAGNOSTICS
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The program will exit successfully if the strings are identical. Otherwise, it
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exits with the value 1 if an earlier string has a greater byte value than a
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later string (e.g.
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.R strcmp b a
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)
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and 255 if an earlier string has a lesser byte value (e.g.
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.R strcmp a b
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).
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When invoked incorrectly, a debug message will be printed and the program will
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exit with the appropriate sysexits.h(3) error code.
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.SH UNICODE
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The program will exit unsuccessfully if the given strings are not identical;
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therefore, Unicode strings may need to be normalized if the intent is to check
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visual similarity and not byte similarity.
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.SH RATIONALE
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The traditional tool for string comparisons in POSIX and other Unix shells has
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been test(1). This tool also handles integer comparisons and file scrutiny.
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These parts of its functionality have been broken out into multiple utilities.
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This program’s functionality may be performed on a POSIX-compliant system with
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test(1p).
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.SH AUTHOR
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Written by DTB <trinity@trinity.moe>.
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.SH COPYRIGHT
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Copyright © 2023 DTB. License AGPLv3+: GNU AGPL version 3 or later
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<https://gnu.org/licenses/gpl.html>.
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.SH SEE ALSO
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strcmp(3), intcmp(1), scrut(1), test(1p)
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