lockfile from the procmail package will do it.
** Changed in: util-linux (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1720541
Title:
flock does not lock dpkg lock file properly
Status in util-linux package in Ubuntu:
Invalid
Bug description:
Test:
sudo flock /var/lib/dpkg/lock -c \
'echo 1; apt-get -o Debug::NoLocking=true check; echo 2; apt-get check'
Expected behavior:
apt-get fails in stage 2.
Workaround (needs moreutils package, which is not installed by default):
sudo lckdo /var/lib/dpkg/lock /bin/sh -c \
'echo 1; apt-get -o Debug::NoLocking=true check; echo 2; apt-get check'
Similarly, flock does not recognize lock set by e.g. apt-get.
man lckdo:
"Now that util-linux contains a similar command named flock, lckdo is
deprecated, and will be removed from some future version of moreutils."
So developer can not rely on lckdo.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: util-linux 2.20.1-5.1ubuntu20.9
ProcVersionSignature: Ubuntu 4.4.0-96.119~14.04.1-generic 4.4.83
Uname: Linux 4.4.0-96-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.25
Architecture: amd64
CurrentDesktop: XFCE
Date: Sat Sep 30 16:30:50 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-09-21 (1105 days ago)
InstallationMedia: Ubuntu-Studio 14.04.1 LTS "Trusty Tahr" - Release amd64
(20140722.1)
SourcePackage: util-linux
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.cron.weekly.fstrim: 2014-09-21T13:07:51.420447
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