locking/atomics: Use sed(1) instead of non-standard head(1) option

POSIX says the -n option must be a positive decimal integer. Not all implementations of head(1) support negative numbers meaning offset from the end of the file. Instead, the sed expression '$d' has the same effect of removing the last line of the file.

Michael Forney committed 7 years ago

Commit ebf8d821 parent 886532a1 file · +1 −1Browse files

Showing the changes to scripts (1 of 1 file). Show all

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scripts/atomic/check-atomics.sh+1−1

@@ -22,7 +22,7 @@ while read header; do · 21 unmodified lines
22	22	OLDSUM="$(tail -n 1 ${LINUXDIR}/include/${header})"
23	23	OLDSUM="${OLDSUM#// }"
24	24
25		− NEWSUM="$(head -n -1 ${LINUXDIR}/include/${header} \| sha1sum)"
	25	+ NEWSUM="$(sed '$d' ${LINUXDIR}/include/${header} \| sha1sum)"
26	26	NEWSUM="${NEWSUM%% *}"
27	27
28	28	if [ "${OLDSUM}" != "${NEWSUM}" ]; then