Comments on: How to Interview a Unix SysAdmin

By: Charlie Guo

Charlie Guo — Thu, 28 Jul 2011 15:40:18 +0000

I like your idea about sysadmin interview. With the development of cloud computing today, may I suggest that a good sysadmin need more automation afforded by shell scripts and cron jobs, they can do serious system engineering and software development.

By: admin

admin — Wed, 01 Jun 2011 07:29:55 +0000

In Linux the “cd” command is built into the shell. If you enter “type cd”, it will tell you “cd is a shell builtin”. On Solaris /usr/bin/cd is a POSIX shell script. Not every available shell has the same functionality built in. Solaris uses POSIX shell scripts in /usr/bin to provide an alternative to built-in shell commands as a failsafe.

By: Charbel Nasr

Charbel Nasr — Tue, 31 May 2011 22:05:08 +0000

Why is the command “cd” not in /usr/bin on linux systems

By: admin

admin — Sun, 01 Aug 2010 15:45:12 +0000

I don’t think so. The “-le” stands for “less or equal”, thus I would not have missed node50.

By: TS

TS — Tue, 20 Jul 2010 18:39:08 +0000

Remember to verify your scripts. You would have missed node50 with this script…

#!/bin/ksh
i=1
while [ $i -le 50 ]
do
ssh node$i “echo ’135.122.12.9 host.mydomain.com’ >> /etc/hosts”
(( i = i + 1 ))
done