[PATCH] scripts/bash_aliases: man_section(): Accept multiple sections
From: Alejandro Colomar <hidden>
Date: 2021-05-09 21:44:26
Subsystem:
the rest · Maintainer:
Linus Torvalds
Signed-off-by: Alejandro Colomar <redacted> --- scripts/bash_aliases | 29 +++++++++++++++++++---------- 1 file changed, 19 insertions(+), 10 deletions(-)
diff --git a/scripts/bash_aliases b/scripts/bash_aliases
index 813c00960..7b1b7da9c 100644
--- a/scripts/bash_aliases
+++ b/scripts/bash_aliases@@ -85,26 +85,35 @@ function grep_syscall_def() ######################################################################## # Linux man-pages -# man_section() prints a specific manual page section (DESCRIPTION, SYNOPSIS, +# man_section() prints specific manual page sections (DESCRIPTION, SYNOPSIS, # ...) of all manual pages in a directory (or in a single manual page file). -# Usage example: .../man-pages$ man_section man2 SYNOPSIS; +# Usage example: .../man-pages$ man_section man2 SYNOPSIS 'CONFORMING TO'; function man_section() { if ! [ -v 2 ]; then - >&2 echo "Usage: ${FUNCNAME[0]} <dir> <section>"; + >&2 echo "Usage: ${FUNCNAME[0]} <dir> <section>..."; return ${EX_USAGE}; fi - find "${1}" -type f \ - |xargs grep -l "\.SH ${2}" \ + local page="$1"; + shift; + local sect="$@"; + + find "${page}" -type f \ + |xargs wc -l \ + |grep -v -e '\b1 ' -e '\btotal\b' \ + |awk '{ print $2 }' \ |sort -V \ |while read -r manpage; do - <${manpage} \ - sed -n \ - -e '/^\.TH/,/^\.SH/{/^\.SH/!p}' \ - -e "/^\.SH ${2}/p" \ - -e "/^\.SH ${2}/,/^\.SH/{/^\.SH/!p}" \ + cat \ + <(<${manpage} sed -n '/^\.TH/,/^\.SH/{/^\.SH/!p}') \ + <(for s in ${sect}; do + <${manpage} \ + sed -n \ + -e "/^\.SH ${s}/p" \ + -e "/^\.SH ${s}/,/^\.SH/{/^\.SH/!p}"; \ + done;) \ |man -P cat -l - 2>/dev/null; done; }
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2.31.1