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fix: dmesg_grep: avoid sigpipe on some systems (#519)

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built from commit cc159fe7fd
 dated 2026-06-08 21:41:08 +0200
 by Stéphane Lesimple (speed47_github@speed47.net)

 Use 'grep -m 1' (works under Linux, busybox, BSD) instead of piping to head -n1
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github-actions[bot]
2026-06-08 19:42:39 +00:00
parent 7847c95208
commit 476ebe59fc
1 changed files with 2 additions and 2 deletions
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spectre-meltdown-checker.sh
+2 -2
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@@ -13,7 +13,7 @@
# #
# Stephane Lesimple # Stephane Lesimple
# #
VERSION='26.36.0606627' VERSION='26.36.0608820'
# --- Common paths and basedirs --- # --- Common paths and basedirs ---
readonly VULN_SYSFS_BASE="/sys/devices/system/cpu/vulnerabilities" readonly VULN_SYSFS_BASE="/sys/devices/system/cpu/vulnerabilities"
@@ -3535,7 +3535,7 @@ dmesg_grep() {
# dmesg truncated # dmesg truncated
return 2 return 2
fi fi
ret_dmesg_grep_grepped=$(dmesg 2>/dev/null | grep -E "$1" | head -n1) ret_dmesg_grep_grepped=$(dmesg 2>/dev/null | grep -m 1 -E "$1")
# not found: # not found:
[ -z "$ret_dmesg_grep_grepped" ] && return 1 [ -z "$ret_dmesg_grep_grepped" ] && return 1
# found, output is in $ret_dmesg_grep_grepped # found, output is in $ret_dmesg_grep_grepped