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When was your OS installed?

Terminal - When was your OS installed?
ls -lct /etc | tail -1 | awk '{print $6, $7}'
2009-09-03 10:26:37
User: MrMerry
Functions: awk ls tail
10
When was your OS installed?

Show time and date when you installed your OS.

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
df / | awk '{print $1}' | grep dev | xargs tune2fs -l | grep create
2009-02-16 18:45:03
User: Kaio
Functions: awk df grep tune2fs xargs
9

Very useful set of commands to know when your file system was created.

ls -lct /etc/ | tail -1 | awk '{print $6, $7, $8}'
2009-09-04 16:52:50
User: peshay
Functions: awk ls tail
5

shows also time if its the same year or shows year if installed before actual year and also works if /etc is a link (mac os)

ls -ldct /lost+found |awk '{print $6, $7}'

Know a better way?

If you can do better, submit your command here.

What others think

better to print out '$8' also. It lists the year of installation (or, if a new installation, the time).

Comment by verboEse 267 weeks and 4 days ago

so this is cause the files in /etc and /bin /sbin are not usually modified after the first install. Is there a generic command for all disrtos cause i use

rpm -qi basesystem

on rpm based systems to get the install date cause the basesystem is the first package to be installed

Comment by rmenn 267 weeks and 4 days ago

yeah, this is supposed to work on all systems, since they all contain something like a Linux Standard Base /etc/lsb-* file or dir in /etc which isn't modified after install. In fedora's case you also have /etc/system-release

Comment by MrMerry 267 weeks and 4 days ago

another way on a dpkg-based (debian/ubuntu) system is to look at the timestamps on the files in /var/lib/dpkg/info/ - they gives the times of each packaging system action.

Comment by bwoodacre 267 weeks and 3 days ago

mmmmm,

macbook-2:~ rick$ ls -lct /etc/ | tail -1 | awk '{print $6, $7, $8}'

8 Jun 07:39

macbook-2:~ rick$

macbook-2:~ rick$ ls -lct /etc | tail -1 | awk '{print $6, $7}'

15 Aug

15 Aug wins for Snow Leopard

Comment by gikku 267 weeks and 1 day ago

Better to check /lost+found as it's generally less likely to have been recreated since installation...

Comment by realist 266 weeks and 6 days ago

Your point of view

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