"Joi L. Ellis" writes:
- A rather general-purpose way to check for *nix is to cat /etc/issue.net,
- which is the login-banner for a remote shell connection. These
- usually default to a line with the OS version and hostname, printed
- before the login prompt.
uhm, no. While that may have once been true, I believe it was only
true of System V derived releases. BSD releases don't have anything
like /etc/issue{.net}. (and I don't remember /etc/issue{,.net} on
any version of BSD I've touched, dating back to BSD 4.2.)
As an example:
egsner-> uname -rs
NetBSD 7.0_BETA
egsner-> ls -l /etc/issue*
ls: No match.
uname(1) or uname(3) are a much better starting point.
I would sugguest that if uname -s returns 'Linux', then start
using alternative methods to figure out which distribution is in
use. (fyi: I am unable to find sw_vers on the CentOS/RHEL
systems I have.)
Doesn't the LSB (Linux Standards Base) require a file such as
lsb-release to describe the distibution?
Not that RHEL has that, having /etc/redhat-release fill that role.
Hmm, maybe it's /etc/system-release that LSB specifies, my RHEL
boxes seem to have that.
No debian derived boxes to check, sorry.
- -----Original Message-----
- From: [email protected] [mailto:[email protected]]
- On Behalf Of Greg Troxel
- Sent: Monday, January 19, 2015 19:28
- To: Eric Schnoebelen
- Cc: Jean-Louis Martineau; [email protected]
- Subject: Re: sw_vers not found on FreeBSD
-
-
- [email protected] (Eric Schnoebelen) writes:
- > Jean-Louis Martineau writes:
- > - selfcheck try to return the distro and version of the OS.
- > - How can it get that information on freebsd? or other bsd?
- > - How to get the 'FreeBSD' string and the '10.1' string?
- >
- > uname -s -> 'FreeBSD'/'NetBSD'/'OpenBSD'/'DragonFlyBSD'
- > uname -r -> '10.1'/'6.1_STABLE'/...
- >
- > "uname -s" provides the system name, and "uname -r" provides the OS
- > revision (on every UNIX family system except Linux, where they return
- > "Linux" and the kernel revision. A side effect of how Linux
- > distributions are created.)
-
- Note that uname is specified by POSIX:
-
- http://pubs.opengroup.org/onlinepubs/9699919799/utilities/uname.html
-
- So really, uname output should be used first, and if there needs
- to be some Linux-specific extra information because of "distributions",
- that should be special-case code for Linux.
-
- FWIW, uname -s and -r on a NetBSD box:
-
- NetBSD
- 6.1_STABLE
-
