I try to know the linux distribution version of a remote linux machine. After trying several commands, I still can't identify the linux distribution version
$ uname -a
Linux server1 2.6.18 #1 Thu Jan 11 21:34:48 CET 2007 i686 athlon-4 i386 GNU/Linux
$ cat /proc/version
Linux version 2.6.18 (root@server1) (gcc version 3.4.6) #1 Thu Jan 11 21:34:48 CET 2007
$ cat /etc/issue
Welcome to \s \r (\l)
$ lsb_release -a
-sh: lsb_release: command not found
$ cat /etc/*-release
cat: /etc/*-release: No such file or directory
what can I do to know its linux distribution(i.e, redhat or debian or anything else?)
lsb_release -a
orcat /etc/issue