This morning I was doing some work with one of my website transfer and to see the changes on my MacBook laptop I knew I would need to flush the DNS cache so I wouldn’t have to wait for the cache to expire. So for anyone else who needs to know the commands here they …
untitled System and Network Configuration * linuxconf – A GUI interactive interface available on Redhat 6.0 or later which includes netconf configuration. * netconf – A GUI interactive interface available on Redhat 6.0 and later. * kbdconf – A Redhat Linux tool which configures the /etc/sysconfig/keyboard file which specifies the location of the keyboard map …
We geeks all have some sort of bluetooth device on us like your Nokia N80 or your new iPhone (which I will be getting and LOVE) so why not take advantage of one of these as a beacon to your computer. With a small application you can set your computer to detect the proximity of …
I needed a quick way to maintain a current symlink to the most recent file by time stamp. Here’s one way to do it: ls -t1 *.jpg | head -1 | xargs -i ln -sf {} current.jpg
I think the number one skill a sysadmin should have is a solid understanding of shells and shell scripting. The Advanced Bash-Scripting Guide is a good place to start or take a refresher. From the introduction: A working knowledge of shell scripting is essential to anyone wishing to become reasonably proficient at system administration, even …
Ok, it’s actually an article about 10 Mental Blocks to Creative Thinking but isn’t creative thinking a huge part of being a kick-ass sysadmin? Here’s what I thought of when I read each point, but I highly recommend that you read the whole article and look for ways it applies to you. In terms of …
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restarting/stopping/starting a service On any init.d based linux distro you can restart a service with the following… /etc/init.d/serviceName restart You may replace ‘restart’ with ’stop’ or ’start’ (and in some cases ’status’). Forcefully stopping a service killall processName Killing on instance of a service kill pid The pid can be gathered by either top or …
useradd useradd userName then run “passwd userName” to set the new users pw passwd passwd username will ask for the new pw twice
Listing Permissions ls -al will display all files in a list with their owners and permissions -rw-r–r– 1 irq13 irq13 1006 Jan 24 10:16 .bashrc Now to break down the above example… -rw-r–r– is the permissions area. The first – would be d if the item is directory, otherwise it will be -. The second …
ps | grep ssh — only display lines that contain ssh ; used to “stack commands” or issue multiple commands on 1 line. cd ..; ls & puts a command in the background. Will let you know when the command is finished > write what is displayed on the screen from a given command to …