commandlinefu.com is the place to record those command-line gems that you return to again and again.
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Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):
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similar to previous except this exports to a temporary file, opens that file with your default web browser, then deletes it.
first need to Edit the configuration file
and under the [tunnels] add this line
ciccio_diverso = /usr/bin/ssh -p 12345
Allows for manual set of the CPU's frequency. First look at "cpupower frequency-info" for all the available frequency steps your processor can be set at.
sudo cpupower frequency-set -f 1100MHz
Lets you change/set a governor to handle the frequency of your CPU.
Available governors are: "powersave", "conservative", "ondemand", "performance", and "userspace".
commandline for mac os x
echo '127.0.0.1 facebook.com' | sudo tee -a /etc/hosts
Do not execute this command if you don't know what you are doing.
This command will open tcp port 3000 in your machine
run `sudo update-rc.d gdm defaults` to get it back
Check to see if a port is open or closed on a given host.
Queries the specified ethernet device for associated driver information
i'm using gawk, you may get varying mileage with other varieties. You might want to change the / after du to say, /home/ or /var or something, otherwise this command might take quite some time to complete. Sorry it's so obsfucated, I had to turn a script into a one-liner under 255 characters for commandlinefu. Note: the bar ratio is relative, so the highest ratio of the total disk, "anchors" the rest of the graph. EDIT: the math was slightly wrong, fixed it. Also, made it compliant with older versions of df.
This will limit the average amount of CPU it consumes.
This script will run each time you boot up.The script must be in /etc/init.d directory.
This short snippet outputs the state of all containers available on your system. It is quite helpful to see which ones are running and which are stopped. Please notice that the "sort -u" is needed, otherwise running containers will be reported twice (see output of "lxc-ls" on its own for why)
Starts the Nessus daemon, downloads and processes the plugins.
Unmounts all CIFS-based network drives. Very nice for shutting down network mounts on a Linux laptop just prior to going to sleep.