Commands using sort

list the top 15 folders by decreasing size in MB

This commands queries the delicious api then runs the xml through xml2, grabs the urls cuts out the first two columns, passes through uniq to remove duplicates if any, and then goes into linkchecker who checks the links. the links go the blacklist in ~/.linkchecker/blacklist. please see the manual pages for further info peeps. I took me a few days to figure this one out. I how you enjoy it. Also don't run these api more then once a few seconds you can get banned by delicious see their site for info. ~updated for no recursive

parallel can be installed on your central node and can be used to run a command multiple times.

In this example, multiple ssh connections are used to run commands. (-j is the number of jobs to run at the same time). The result can then be piped to commands to perform the "reduce" stage. (sort then uniq in this example).

This example assumes "keyless ssh login" has been set up between the central node and all machines in the cluster.

bashreduce may also do what you want.

make usable on OSX with filenames containing spaces. note: will still break if filenames contain newlines... possible, but who does that?!

the column number is '6'

Output contains also garbage (text parts from netstat's output) but it's good enough for quick check who's overloading your server.

The number on the far right is ratio of comments to code, expressed as a percentage. For the rest of the Yardstick documentation see https://github.com/calmh/yardstick/blob/master/README.md#reported-metrics

Go to "https://twitter.com/search/realtime?q=%23TeamFollowBack&src=hash" and then copy al the text on the page. If you scroll down the page will be bigger. Then put al the text in a text file called twit.txt

If you follow the user there is a high probability the users give you follow back.

To follow all the users you can use an iMacros script.

Interesting to see which packages are larger than the kernel package.

Useful to understand which RPMs might be candidates to remove if drive space is restricted.

This command is more robust because it handles spaces, newlines and control characters in filenames. It uses printf, not ls, to determine file size.

Find top 5 big files

Get the longest match of file extension (Ex. For 'foo.tar.gz', you get '.tar.gz' instead of '.gz')

If you have GNU findutils, you can get only the file name with

instead of

The original command doesn't work for me - does something weird with sed (-r) and xargs (-i) with underscores all over...

This one works in OSX Lion. I haven't tested it anywhere else, but if you have bash, gpg and perl, it should work.

Similar to `cpulimit`, although `prlimit` can be found shipped with recent util-linux.

Example: limit CPU consumption to 10% for a math problem which ordinarily takes up 100% CPU:

Before:

See the difference `prlimit` makes:

To actually monitor the CPU usage, use `top`, `sar`, etc.. or:

Avoids the nested 'find' commands but doesn't seem to run any faster than syssyphus's solution.

Replace \-dev with whatever you wanna search for

Enhanced version: fixes sorting by human readable numbers, and filters out non MB or GB entries that have a G or an M in their name.

Show sizes of all files and directories in a directory in size order.

for reverse order.

Taken from http://serverfault.com/questions/62411/how-can-i-sort-du-h-output-by-size