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Reply-To: Brian DOT Inglis AT SystematicSw DOT ab DOT ca
Subject: Re: Is who -b command available? Need to know when computer was started.
To: cygwin AT cygwin DOT com
References: <014001d46565$feedda10$fcc98e30$@yahoo.com> <20181016165745 DOT GA1226 AT phoenix>
From: Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
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Date: Tue, 16 Oct 2018 20:21:45 -0600
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On 2018-10-16 10:57, Gary Johnson wrote:
> On 2018-10-16, Peder Sverdrup via cygwin wrote:
>> I am making a script and need to know when the computer was last booted.
>> This can be done with who -b command. I have installed the minimum cygwin
>> and this command is not available.
>> Which package do I need to install in order to have this command available
>> (or any other command that can tell when the computer was last booted).
> The procps-ng package provides the uptime command which will tell
> you how long it has been since the computer was last booted.

/var/run/utmp system startup/shutdown records are not written so who -b shows
nothing although who is included in cygwin Base package coreutils
/proc/uptime shows number of seconds wall time since startup, and number of
seconds idle time since then e.g.:
$ cat /proc/uptime; date -d"now - `cut -d' ' -f1 /proc/uptime` seconds"; uptime
115395.52 107152.61
2018 Oct 15 Mon 12:05:18
 20:08:34 up 1 day,  8:03,  2 users,  load average: 1.81, 1.58, 1.76

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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