Commands by funky

Commands by funky (5)

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Print all commands of a user on commandlinefu.com

This utilizes the Requests and BeautifulSoup libraries in Python to retrieve a user page on commandlinefu, parse it (error-tolerant) and extract all the lines of the following format: gzip * To print them, a list comprehension is used to iterate over the values, and join() is called on a newline character. Show Sample Output
This is sample output - yours may be different.
```
getfacl file1 | setfacl --set-file=- file2
gzip *
alias dush="du -sm *|sort -n|tail"
python -c 'print "-"*50'
```
2

python -c "import requests; from bs4 import BeautifulSoup; print '\n'.join([cmd.text for cmd in BeautifulSoup(requests.get('http://www.commandlinefu.com/commands/by/${USER}').content, 'html.parser').find_all('div','command')])"

funky · 2015-08-22 21:32:36 14
Makes the permissions of file2 the same as file1

same as the chmod example, but should also copy extended access control list attributes. deliberately stolen from: man setfacl
This is sample output - yours may be different.
6

getfacl file1 | setfacl --set-file=- file2

funky · 2010-03-31 13:36:53 8
Individually compress each file in a directory

Should do exactly the same - compress every file in the current directory. You can even use it recursively: gzip -r .
This is sample output - yours may be different.
-3

gzip *

funky · 2010-03-29 10:58:40 4
easily find megabyte eating files or directories

sorts the files by integer megabytes, which should be enough to (interactively) find the space wasters. Now you can dush for the above output, dush -n 3 for only the 3 biggest files and so on. It's always a good idea to have this line in your .profile or .bashrc Show Sample Output
This is sample output - yours may be different.
```
2       tools
4       kernel
6       firmware
14      Documentation
15      include
17      net
17      sound
28      fs
94      arch
189     drivers
```
29

alias dush="du -sm *|sort -n|tail"

funky · 2010-03-26 10:18:57 16
Print a row of 50 hyphens

essentially the ruby one, but perhaps has a larger installed base
This is sample output - yours may be different.
9

python -c 'print "-"*50'

funky · 2010-03-25 11:09:30 8

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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Converts uppercase chars in a string to lowercase

List the size (in human readable form) of all sub folders from the current location

Tested on MacOS and GNU/Linux. It works in dirs containing files starting with '-'. It runs 'du' only once. It sorts according to size. It treats 1K=1000 (and not 1024)

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Show contents of all git objects in a git repo

This script finds all git objects and `git cat-file`'s their content. This is really just a helper function to play around with the internals of git repositories. See https://git-scm.com/book/en/v2/Git-Internals-Git-Objects of more info.

Numbers guessing game

Felt like I need to win the lottery, and wrote this command so I train and develop my guessing abilities.

Download all manuals RedHat 7 (CentOS/Fedora) with one command in Linux

Colorize grep output

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Find all active ip's in a subnet

nmap for windows and other platforms is available on developer's site: http://nmap.org/download.html nmap is robust tool with many options and has various output modes - is the best (imho) tool out there.. from nmap 5.21 man page: -oN/-oX/-oS/-oG : Output scan in normal, XML, s|

Host cpu performance

Measure the cpu performance: In-case if the cpu is thermal throttling then you can find it using this command. Check the first line of the output. Example: Doing md5 for 3s on 16 size blocks: 11406892 md5's in 2.98s ? #(When cpu is not throttling) Doing md5 for 3s on 16 size blocks: 110692 md5's in 2.98s ?? #(When cpu is thermal throttling) Practical use case: Once we had cooling outage in data center which caused thermal throttling in some of the worker nodes. We used this tool to prove that some servers are not performing well because of the cpu thermal throttling.

Stay in the loop…

Follow the Tweets.

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.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

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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