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Upload - rsync using key pair

Connect EC2 server with public keys "/root/.ec2/id_rsa-gsg-keypair" or "/root/.ec2/keypair.pem"
This is sample output - yours may be different.
-2

rsync -avvvz -e "ssh -i /root/.ec2/id_rsa-gsg-keypair" --archive --progress /root/.ec2/id_rsa-gsg-keypair root@ec2-75-101-212-113.compute-1.amazonaws.com:/root

svnlabs · 2010-01-22 16:53:42 4
Project Zipped

Project Zipped
This is sample output - yours may be different.
-5

zip -r -9 /var/www/html/project.zip /var/www/html/project

svnlabs · 2010-01-22 16:51:11 3
Get Memeory Info

Get Memeory Info
This is sample output - yours may be different.
-1

cat /proc/meminfo

svnlabs · 2010-01-22 16:48:03 3
Check RAM size

Check RAM size
This is sample output - yours may be different.
7

free -mto

svnlabs · 2010-01-22 16:46:50 4
Insert the last argument of the previous command
This is sample output - yours may be different.
12

<ALT> .

new_user · 2010-01-22 15:06:26 10
Insert the last argument of the previous command
This is sample output - yours may be different.
24

<ESC> .

wincus · 2010-01-22 14:27:44 19
Extract all 7zip files in current directory taking filename spaces into account
This is sample output - yours may be different.
-7

savesIFS=$IFS;IFS=$(echo -en "\n\b"); for items in `ls *.7z`; do 7zr e $items ; done; IFS=$saveIFS

BCK · 2010-01-22 14:16:09 7
Find unused IPs on a given subnet

Somewhat shorter version. Show Sample Output
This is sample output - yours may be different.
```
...
192.168.0.226
192.168.0.227
...
```
4

fping -r1 -g <subnet> 2> /dev/null | grep unreachable | cut -f1 -d' '

unixmonkey7953 · 2010-01-22 09:07:04 3
Find unused IPs on a given subnet
This is sample output - yours may be different.
1

nmap -sP <subnet>.* | egrep -o '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+' > results.txt ; for IP in {1..254} ; do echo "<subnet>.${IP}" ; done >> results.txt ; cat results.txt | sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4 | uniq -u

bortoelnino · 2010-01-22 00:26:42 4
Linux zsh one-liner to Determine which processes are using the most swap space currently

Col 1 is swapped sum in kb Col 2 is pid of process Col 3 is command that was issued Show Sample Output
This is sample output - yours may be different.
```
 4428 9187 python/usr/share/system-config-printer/applet.py
 2012 9163 gnome-panel
 1516 9127 /usr/lib/gnome-settings-daemon/gnome-settings-daemon
 1408 18899 /usr/lib/gvfs/gvfsd-smb--spawner:1.9/org/gtk/gvfs/exec_spaw/4
 1040 1681 gnome-terminal
```
0

for i in $(ps -ef | awk '{print $2}') ; { swp=$( awk '/Swap/{sum+=$2} END {print sum}' /proc/$i/smaps ); if [[ -n $swp && 0 != $swp ]] ; then echo -n "\n $swp $i "; cat /proc/$i/cmdline ; fi; } | sort -nr

cbrinker · 2010-01-22 00:09:46 11
Create unique email addresses directly from the US census site*Full command in comments

** Replace the ... in URLS with: www.census.gov/genealogy/www/data/1990surnames Couldn't fit in 256 Created on Ubuntu 9.10 but nothing out of the ordinary, should work anywhere with a little tweaking. 5163 is the number of unique first names you get when combine the male and female first name files from. http://www.census.gov/genealogy/www/data/1990surnames/names_files.html Show Sample Output
This is sample output - yours may be different.
```
stasia.palmer@test.domain
mozell.sybounheuan@test.domain
yuki.nypaver@test.domain
annamae.tilbury@test.domain
jaimee.warfield@test.domain
cassidy.mchugh@test.domain
daniele.makey@test.domain
ivelisse.besancon@test.domain
marylin.kocher@test.domain
```
0

paste -d "." <(curl http://.../dist.female.first http://.../dist.male.first | cut -d " " -f 1 | sort -uR) <(curl http://..../dist.all.last | cut -d " " -f 1 | sort -R | head -5163) | tr "[:upper:]" "[:lower:]" | sed 's/$/@test.domain/g'

connorsy · 2010-01-21 19:52:28 3
delete duplicate lines from a file and keep the order of the other lines

i wanted to delete all duplicate lines from .bash_history and keep the order of the other lines. the command cat's the file and adds line numbers, then sorts by the second column. afterwards uniq omits repeated lines, but skips the first field (the line number). then it sorts by the line numbers and at the end cuts the numbers off.
This is sample output - yours may be different.
4

cat -n <file> | sort -k 2 | uniq -f 1 | sort -n | cut -f 2-

fpunktk · 2010-01-21 18:55:58 11
show tcp syn packets on all network interfaces
This is sample output - yours may be different.
0

tcpdump -i any -n tcp[13] == 2

wincus · 2010-01-21 14:18:16 3
List your Boxee queue

Might be able to do it in less steps with xmlstarlet, although whether that would end up being shorter overall I don't know - xmlstarlet syntax confuses the heck out of me. Prompts for your password, or if you're a bit mental you can add your password into the command itself in the format "-u user:password". Show Sample Output
This is sample output - yours may be different.
```
queued  Youtube video
queued  TEDTalks : The amazing intelligence of crows - Joshua Klein
queued  The Fresh Prince of the Dark Side Pranks Christian TV
queued  Grand Theft Auto: Chinatown Wars
queued  Flight of the Conchords Ep 6 Bret, You've got it Going On
```
0

curl -u <username> http://app.boxee.tv/api/get_queue | xml2 | grep /boxeefeed/message/description | awk -F= '{print $2}'

Strawp · 2010-01-20 16:17:19 547
Play back shell session recorded using the

This command will play back each keystroke in a session log recorded using the script command. You'll need to replace the ^[ ^G and ^M characters with CTRL-[, CTRL-G and CTRL-M. To do this you need to press CTRL-V CTRL-[ or CTRL-V CTRL-G or CTRL-V CTRL-M. You can adjust the playback typing speed by modifying the sleep. If you're not bothered about seeing each keypress then you could just use: cat session.log Show Sample Output
This is sample output - yours may be different.
```
$ script session.log
Script started, file is session.log
$ pwd
/home/jon
$ exit
Script done, file is session.log


$ (IFS=; sed 's/^[]0;[^^G]*^G/^M/g' session.log | while read -n 1 ITEM; do [ "$ITEM" = "^M" ] && ITEM=$'\n'; echo -ne "$ITEM"; sleep 0.05; done; echo)
Script started on Wed 20 Jan 2010 15:56:36 GMT
$ exit
Script done on Wed 20 Jan 2010 15:56:45 GMT
```
0

(IFS=; sed 's/^[]0;[^^G]*^G/^M/g' <SessionLog> | while read -n 1 ITEM; do [ "$ITEM" = "^M" ] && ITEM=$'\n'; echo -ne "$ITEM"; sleep 0.05; done; echo)

jgc · 2010-01-20 16:11:32 5
Print the contents of $VARIABLE, six words at a time

Print out the contents of $VARIABLE, six words per line, ignoring any single or double quotes in the text. Useful when $VARIABLE contains a sentence that changes periodically, and may or may not contain quoted text.
This is sample output - yours may be different.
1

echo $VARIABLE | xargs -d'\40' -n 6 echo

SuperFly · 2010-01-20 15:12:53 4
Exclude .svn, .git and other VCS junk for a pristine tarball

~$ tar --version tar (GNU tar) 1.20
This is sample output - yours may be different.
29

tar --exclude-vcs -cf src.tar src/

hendry · 2010-01-20 10:16:17 14
remove at jobs

Removes all the at shedules jobs
This is sample output - yours may be different.
0

atrm $(atq|cut -f1)

frans · 2010-01-20 08:04:35 6

Credit goes to "eightmillion" Show Sample Output

-5

removedir(){ read -p "Delete the current directory $PWD ? " human;if [ "$human" = "yes" ]; then [ -z "${PWD##*/}" ] && { echo "$PWD not set" >&2;return 1;}; rm -Rf ../"${PWD##*/}"/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; }

oshazard · 2010-01-20 08:01:21 9

Download full FLAC albums from archive.org

The only zipped version of an album available for download is the lossy mp3 version. To download lossless files, because of their size, you must download them individually. This command scrapes the page for all the FLAC (or also SHN) files.
This is sample output - yours may be different.
1

wget -rc -A.flac --tries=5 http://archive.org/the/url/of/the/album

meunierd · 2010-01-20 07:36:25 4
Merge - Concate MP3 files

That way, you can make a mix on the fly with the mp3 files in the current directory to make a bunch mp3 file.
This is sample output - yours may be different.
0

sox *.mp3 -t wavpcm - | lame - > bunch.mp3

sputnick · 2010-01-20 01:27:12 2
renice by name
This is sample output - yours may be different.
4

renice +5 -p $(pidof <process name>)

0x2142 · 2010-01-19 22:16:24 3
transfer files locally to be sure that file permissions are kept correctly showing progress

This may seem like a long command, but it is great for making sure all file permissions are kept in tact. What it is doing is streaming the files in a sub-shell and then untarring them in the target directory. Please note that the -z command should not be used for local files and no perfomance increase will be visible as overhead processing (CPU) will be evident, and will slow down the copy. You also may keep simple with, but you don't have the progress info: cp -rpf /some/directory /other/path Show Sample Output
This is sample output - yours may be different.
```
7MB 0:00:01 [59.7MB/s] [============>        ] 57% ETA 0:00:00
```
-2

dir='path to file'; tar cpf - "$dir" | pv -s $(du -sb "$dir" | awk '{print $1}') | tar xpf - -C /other/path

starchox · 2010-01-19 19:05:45 3
Perl one liner for epoch time conversion

Converts Unix epoch time to localtime. Useful for any logs that only display epoch time. Show Sample Output
This is sample output - yours may be different.
```
perl -pe's/([\d.]+)/localtime $1/e;' /var/nagios/nagios.log

[Tue Jan 19 09:48:00 2010] HOST EVENT HANDLER: winboxen.example.com;(null);(null);(null);notify-host-by-email
```
3

perl -pe's/([\d.]+)/localtime $1/e;'

tuxtutorials · 2010-01-19 18:47:58 3
improve copy file over ssh showing progress

You set the file/dirname transfer variable, in the end point you set the path destination, this command uses pipe view to show progress, compress the file outut and takes account to change the ssh cipher. Support dirnames with spaces. Merged ideas and comments by http://www.commandlinefu.com/commands/view/4379/copy-working-directory-and-compress-it-on-the-fly-while-showing-progress and http://www.commandlinefu.com/commands/view/3177/move-a-lot-of-files-over-ssh Show Sample Output
This is sample output - yours may be different.
```
112MB 0:00:12 [8.78MB/s] [==============>     ] 96%
```
3

file='path to file'; tar -cf - "$file" | pv -s $(du -sb "$file" | awk '{print $1}') | gzip -c | ssh -c blowfish user@host tar -zxf - -C /opt/games

starchox · 2010-01-19 16:02:45 37
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Create sqlite db and store image

Creates a simple sqlite db (img.db) inserts /tmp/Q.jpg on base64 an recorvers it as /tmp/W.jpg

mtr, better than traceroute and ping combined

mtr combines the functionality of the traceroute and ping programs in a single network diagnostic tool. As mtr starts, it investigates the network connection between the host mtr runs on and HOSTNAME. by sending packets with purposly low TTLs. It continues to send packets with low TTL, noting the response time of the intervening routers. This allows mtr to print the response percentage and response times of the internet route to HOSTNAME. A sudden increase in packetloss or response time is often an indication of a bad (or simply over‐loaded) link.

Find top 10 largest files in /var directory (subdirectories and hidden files included )

Should work even when very large files exist.

Get absolut path to your bash-script

Another way of doing it that's a bit clearer. I'm a fan of readable code.

Recover a deleted file

grep searches through a file and prints out all the lines that match some pattern. Here, the pattern is some string that is known to be in the deleted file. The more specific this string can be, the better. The file being searched by grep (/dev/sda1) is the partition of the hard drive the deleted file used to reside in. The ?-a? flag tells grep to treat the hard drive partition, which is actually a binary file, as text. Since recovering the entire file would be nice instead of just the lines that are already known, context control is used. The flags ?-B 25 -A 100? tell grep to print out 25 lines before a match and 100 lines after a match. Be conservative with estimates on these numbers to ensure the entire file is included (when in doubt, guess bigger numbers). Excess data is easy to trim out of results, but if you find yourself with a truncated or incomplete file, you need to do this all over again. Finally, the ?> results.txt? instructs the computer to store the output of grep in a file called results.txt. Source: http://spin.atomicobject.com/2010/08/18/undelete?utm_source=y-combinator&utm_medium=social-media&utm_campaign=technical

Copy your SSH public key on a remote machine for passwordless login.

Should run on any system with ssh installed.

To get the CPU temperature continuously on the desktop

There is no need for variables. I also added sleep to reduce cpu usage, however I didn't test it.

Get information on your graphics card on linux (such as graphics memory size)

probably only works if you have one graphics card. used this: http://www.cyberciti.biz/faq/howto-find-linux-vga-video-card-ram/ as reference can be expanded, for example: $ lspci -v -s `lspci | awk '/VGA/{print $1}'` | sed -n '/Memory.*, prefetchable/s/.*\[size=$[^]]\+$\]/\1/p' will just get the amount of prefetchable memory compare to: $ lshw -C display which does not give the size (it does give byte ranges and you could calculate the size from that, but that's a pain) Also uses a command which is not standard on linux; wheras lspci is a core utility provided by most systems

create an emergency swapfile when the existing swap space is getting tight

Create a temporary file that acts as swap space. In this example it's a 1GB file at the root of the file system. This additional capacity is added to the existing swap space.

geoip information

Show external IP and geolocation information. Primary feature is the use of tee to echo IP _and_ send to geoiplookup command...Use IP as input for as many commands as you want with more >( [command] ) Thanks to http://www.commandlinefu.com/commands/view/6334/ Requires MaxMind DB and geoiplookup tool. Sample output has IP obfuscated on first line, lines 2-4 from having MaxMind Country && MaxMind City DBs installed

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