linux boot time

Wanna know the boot time of a linux box? It's stored in /proc/stat, for easy use, in the standard unix time format. Here's a 1 liner to print it out, in your local timezone.

open P,"/proc/stat";undef $/;$c=<P>;($t)=($c =~ /btime\s(\d+)/);print 
+localtime($t)."\n";
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Comment on linux boot time Download Code

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RE: linux boot time by merlyn (Sage) on May 15, 2000 at 21:49 UTC
or more simply: `perl -ne 'print scalar localtime $1 if /^btime (\d+)/' /proc/stat` [download] -- Randal L. Schwartz, Perl hacker	[reply] [d/l]
Re^2: linux boot time by nico57 (Initiate) on Mar 10, 2012 at 03:14 UTC
Easier yet with sed and date: `date -d @$(sed -n '/^btime /s///p' /proc/stat)` [download] (OK, there's no Perl here, but that was just for the thrill of "improving" upon a Randal L. Schwartz solution :)	[reply] [d/l]
Re^3: linux boot time by merlyn (Sage) on Mar 26, 2012 at 19:47 UTC
My "date" here doesn't have a "-d" that works that way. Nor is @$(...) standard. I suspect you're coding full of linuxisms without realizing it, although in this context, it's fair since it was about a "linux" boot time. -- Randal L. Schwartz, Perl hacker The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.	[reply]