Commands by realist

Commands by realist (6)

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Share your terminal session real-time

One person does `mkfifo foo; script -f foo' and another can supervise real-time what is being done using `cat foo'.
This is sample output - yours may be different.
19

mkfifo foo; script -f foo

realist · 2011-09-08 02:51:44 18
Commit only newly added files to subversion repository
This is sample output - yours may be different.
4

svn ci `svn stat |awk '/^A/{printf $2" "}'`

realist · 2009-11-04 03:30:07 3
When was your OS installed?
This is sample output - yours may be different.
3

ls -ldct /lost+found |awk '{print $6, $7}'

realist · 2009-09-08 06:16:04 5
Connect to SMTP server using STARTTLS

Allows you to connect to an SMTP server over TLS, which is useful for debugging SMTP sessions. (Much like telnet to 25/tcp). Once connected you can manually issue SMTP commands in the clear (e.g. EHLO) Show Sample Output
This is sample output - yours may be different.
```
$ openssl s_client -starttls smtp -crlf -connect smtp1.google.com:25
CONNECTED(00000003)
depth=1 /C=ZA/ST=Western Cape/L=Cape Town/O=Thawte Consulting cc/OU=Certification Services Division/CN=Thawte Premium Server CA/emailAddress=premium-server@thawte.com
verify error:num=19:self signed certificate in certificate chain
verify return:0
---
Certificate chain
<...>
---
220 smtp.google.com ESMTP
```
7

openssl s_client -starttls smtp -crlf -connect 127.0.0.1:25

realist · 2009-08-19 08:37:24 5
Terminal redirection

Will redirect output of current session to another terminal, e.g. /dev/pts/3 Courtesy of bassu, http://www.commandlinefu.com/commands/by/bassu
This is sample output - yours may be different.
6

script -f /dev/pts/3

realist · 2009-08-19 07:04:17 4
Get the 10 biggest files/folders for the current direcotry
This is sample output - yours may be different.
9

du -sk * |sort -rn |head

realist · 2009-08-19 02:31:30 6

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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Function to create an alias on the fly

Is used like this: mkalias rmcache "rm -rfv app/cache/*"

Get the size of all the directories in current directory

OSX's BSD version of the du command uses the -d argument instead of --max-depth.

youtube2m3u

generate playlists from youtube ( or othre things that support yt-dlp)

view the system memory in clear text

see what's in your memory right now... sometimes you find passwords, account numbers and url's that were recently used. Anyone have a safe command to clear the memory without rebooting?

Check if port is open on remote machine

Check if port is open, if you don't have ncat on your machine.

Get the Nth argument of the last command (handling spaces correctly)

Bash's history expansion character, "!", has many features, including "!:" for choosing a specific argument (or range of arguments) from the history. The gist is any number after !: is the number of the argument you want, with !:1 being the first argument and !:0 being the command. See the sample output for a few examples. For full details search for "^HISTORY EXPANSION" in the bash(1) man page. Note that this version improves on the previous function in that it handles arguments that include whitespace correctly.

Extracting a range of pages from a PDF, using GhostScript

In this example we extract pages 14-17

Check command history, but avoid running it

!whatever will search your command history and execute the first command that matches 'whatever'. If you don't feel safe doing this put :p on the end to print without executing. Recommended when running as superuser.

Find usb device

I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him

StopWatch, simple text, hh:mm:ss using Unix Time

Works on real time clock, unix time based, decrementing the actual time from initial time saved in an environment variable exported to child process inside watch Shows elapsed time from start of script in hh:mm:ss format Non afected by system slow down due to the use of date.

Stay in the loop…

Follow the Tweets.

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