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Top Forums UNIX for Dummies Questions & Answers Different ways to get OS version Post 302556475 by Corona688 on Sunday 18th of September 2011 05:45:35 PM
Old 09-18-2011
Well, for starters, redhat-release only exists on redhat. it's also only a file, so might lie or be missing.

More distributions have /etc/release but it's not impossible they won't, or be incorrect.

/proc/version is more general but only a Linux thing as far as I know.

uname exists almost everywhere.
 

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RPMSPEC(8)						      System Manager's Manual							RPMSPEC(8)

NAME
rpmspec - RPM Spec Tool SYNOPSIS
QUERYING SPEC FILES: rpmspec {-q|--query} [select-options] [query-options] SPEC_FILE ... select-options [--rpms] [--srpms] query-options [--qf,--queryformat QUERYFMT] [--target TARGET_PLATFORM] QUERY OPTIONS The general form of an rpm spec query command is rpm {-q|--query} [select-options] [query-options] You may specify the format that the information should be printed in. To do this, you use the --qf|--queryformat QUERYFMT option, followed by the QUERYFMT format string. See rpm(8) for details. SELECT OPTIONS --rpms Operate on the binary package header(s). --srpm Operate on the source package header(s). SEE ALSO
popt(3), rpm(8), rpmdb(8), rpmkeys(8), rpmsign(8), rpm2cpio(8), rpmbuild(8), rpmspec --help - as rpm supports customizing the options via popt aliases it's impossible to guarantee that what's described in the manual matches what's available. http://www.rpm.org/ <URL:http://www.rpm.org/> AUTHORS
Marc Ewing <marc@redhat.com> Jeff Johnson <jbj@redhat.com> Erik Troan <ewt@redhat.com> Panu Matilainen <pmatilai@redhat.com> Red Hat, Inc 29 October 2010 RPMSPEC(8)
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