On 02/11/2016 09:36 PM, Adam Borowski wrote: > On Thu, Feb 11, 2016 at 11:59:09PM +0530, Pirate Praveen wrote: >> Checking /proc/cmdline was working in my test machine as I had systemd >> before it became the default. >> >> I think checking /proc/1/cmdline will be a better method of checking systemd. > > /proc/1/cmdline will be wrong in chroots if the chroot doesn't use systemd > but the host system does. You want to check /run/systemd instead.
Actually, you want to check that /run/systemd/system is a directory, because that is the official way upstream says one should check for PID 1 being systemd, and it is also what sd_booted() from libsystemd0 does, see http://man7.org/linux/man-pages/man3/sd_booted.3.html Regards, Christian
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