Commands by sergeylukin

Commands by sergeylukin (7)

sorted by

List directories sorted by size
This is sample output - yours may be different.
-1

du -sh * | sort -h

sergeylukin · 2015-09-14 10:24:06 7
Find files/directories newer than X

Sometimes you just want to operate on files that were created after specific date. This command consists of 3 commands: - Create a dummy file with the custom date - Find all files with "creation time" further than our custom date by using `-newer` find option. Add your crazy stuff here, like moving, deleting, printing, etc. - Remove the dummy file Show Sample Output
This is sample output - yours may be different.
```
./afile
./bfile
```
-1

touch -t 197001010000 ./tmp && find . -newer ./tmp && rm -f ./tmp

sergeylukin · 2014-11-18 00:29:26 5
Compile all gettext source files

This command takes all `.po` files inside `i18n` directory and compiles them to `.mo` files with same basename
This is sample output - yours may be different.
0

find ./i18n -name "*.po" | while read f; do msgfmt $f -o ${f%.po}.mo; done

sergeylukin · 2014-11-14 19:14:35 9
Write a shell script that removes files that contain a string

After this command you can review doit.sh file before executing it. If it looks good, execute: `. doit.sh`
This is sample output - yours may be different.
-3

find . | xargs grep -l "FOOBAR" | awk '{print "rm -f "$1}' > doit.sh

sergeylukin · 2014-04-06 15:48:41 5
Search and replace in multiple files recursively

Replace "foo" with "bar" in all files in current directory recursively
This is sample output - yours may be different.
1

grep -lr "foo" . | xargs sed -i "s/foo/bar/g"

sergeylukin · 2013-10-28 13:02:47 6
Copy file to multiple destinations
This is sample output - yours may be different.
0

cat myfile | tee dest1 dest2 > /dev/null 2>&1

sergeylukin · 2012-11-28 09:51:25 2
Monitor file contents that is being overwritten regularly

Watch file's contents that is getting overwritten Show Sample Output
This is sample output - yours may be different.
```
File contents
Which is beings updated every second
```
0

while sleep 1; do clear; cat /tmp/whatever.cue; done

sergeylukin · 2012-11-26 08:02:03 3

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.

Share Your Commands

Check These Out

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"

Get a funny one-liner from www.onelinerz.net

Put this command in .bashrc and every time you open a new terminal a random quote will be downloaded and printed from onelinerz.net. By altering the URL in the w3m statement you can change the output: 1 to 10 lines - http://www.onelinerz.net/random-one-liners/(number)/ 20 newest lines - http://www.onelinerz.net/latest-one-liners/ Top 10 lines - http://www.onelinerz.net/top-100-funny-one-liners/ Top 10 lines are updated daily.

Mount a temporary ram partition

For FreeBSD

Quickly add user accounts to the system and force a password change on first login

This command is a bit Linux specific, as --stdin doesn't exist for passwd on many Unix machines. Further, useradd is high level in most distributions and Unix derivatives except for the Debian family of distros, where adduser would be more appropriate. The last bit, with chage, will force the user to change their password on new login.

Set laptop display brightness

Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Count Files in a Directory with Wildcards.

If the dir | wc -l Command not working.

Quickly Encrypt a file with gnupg and email it with mailx

This is a quick and easy way of encrypting files in a datastream, without ever really creating an output file from gpg. Useful with cron also, when file(s) have to be sent based on a set schedule.

list files recursively by size

Find out current working directory of a process

Adhoc tar backup

Creates a quick backup with tar to a remote host over ssh.

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,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands by sergeylukin