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authorFelix Fietkau <nbd@openwrt.org>2015-09-09 20:36:10 +0000
committerFelix Fietkau <nbd@openwrt.org>2015-09-09 20:36:10 +0000
commit3670f4128d9d65b56397c5b86bfcc23a69cdba3d (patch)
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parent5fcafa319d25ca79638e7d705cc4fd097b8bf33b (diff)
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busybox: lock: implement -n "Fail rather than wait"
lock -n is similiar to flock -n. If the lock was already taken, fail with exit code = 1 and write error message to stderr. example: if ! lock -n /tmp/foo ; then echo lock exits. else echo lock was free. But is locked now. fi > lock was free. But is locked now. > lock exists. Signed-off-by: Alexander Couzens <lynxis@fe80.eu> SVN-Revision: 46836
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