commandlinefu.com is the place to record those command-line gems that you return to again and again.
Delete that bloated snippets file you've been using and share your personal repository with the world. 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.
If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/
You can sign-in using OpenID credentials, or register a traditional username and password.
First-time OpenID users will be automatically assigned a username which can be changed after signing in.
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,…):
Subscribe to the feed for:
[root@dhcppc1 windows]# cat /var/log/honeylog.log
Connection from 192.168.1.71 port 21 [tcp/ftp] accepted
Connection from 192.168.1.65 port 21 [tcp/ftp] accepted
[root@dhcppc1 windows]# nc 192.168.1.65 21
220 ProFTPD 1.3.3c Server [ProFTPD]
FAILED FTP ATTEMPT - PORT 21
*You can not run it if you have activated the ftp server.
grep по ps aux
change gpeXX by the culprit you discovered on phase 1
In case of this example, the culprit is the biggest number, ie, gpe1C
/sys/firmware/acpi/interrupts/ff_gbl_lock: 0 enabled
/sys/firmware/acpi/interrupts/gpe01: 0 enabled
/sys/firmware/acpi/interrupts/gpe06: 0 enabled
/sys/firmware/acpi/interrupts/gpe17: 2 enabled
/sys/firmware/acpi/interrupts/gpe18: 0 enabled
/sys/firmware/acpi/interrupts/gpe1C: 19 enabled
This procedure,if solved this universal issue all linix distros are experimenting for more than 2 years, may be included at startup, via cron. But try first commandline.
Need to encrypt something from the command line? I've used this before to encrypt passwords with a master password that was shared amongst a team.
~$ echo -n 'jA0EAwMCPdknsznAww5gySL1/quqhXg6QgQkIz5abzGP5EZgTbXCFU+y6dP8ySWovytc' | base64 --decode | gpg --decrypt
gpg: CAST5 encrypted data
Enter passphrase: secret
gpg: encrypted with 1 passphrase
Copies a directory structure from /home/ to /backups/home (notice that the destination does not have a trailing slash)
Prints an easy-to-copy color code for each color.
Really helpfull when play with files having spaces an other bad name. Easy to store and access names and path in just a field while saving it in a file.
This format (URL) is directly supported by nautilus and firefox (and other browsers)
outputs a f=220Hz guitar string sound (fifth string A)
some numbers have strange output!
some numbers output nothing!
some numbers will kill your terminal! even logout when running in tty
but i don't know why! can anyone explain it to me?
use it to add a random boolean switch to your script
use it to stagger cronjob or to get a random number
increase the range by replacing 100 with your own max value
This command is useful for searching through a whole folder worth of pdf files.
Creates a git repository in a predefined location.
git gc should be run on all git repositories every 100 commits. This will help do do so if you have many git repositories ;-)
How much memory is chrome sucking?
Well, this is quite useful for testing if your hardware watchdog is working properly.
POSIX compliant arithmetic evaluation.