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Find multiple filename expressions and sort by date
This is sample output - yours may be different.
-1

find . $ -iname "*.doc" -o -iname "*.docx" $ -type f -exec ls -l --full-time {} +|sort -k 6,7

koby · 2014-03-10 17:45:33 8
Fork bomb (don't actually execute)

“$0” is a variable returning the name of the script that you call it in — so running “./$0&” twice amounts to the script running itself in a separate process twice. Show Sample Output
This is sample output - yours may be different.
```
#!/bin/bash
./$0&
./$0&
```
-1

echo -e “\x23\x21/bin/bash\n\.\/\$\0\&\n\.\/\$\0\&” > bomb.sh && ./bomb.sh

realkstrawn93 · 2021-04-30 19:33:40 139
Intall not signed packeges with yum

Same as: 1 rpm -ivh package.rpm 2 yum localinstall package.rpm 3 Edit /etc/yum.conf or repository.repo and change the value of gpgcheck from 1 to 0 (!dangerous)
This is sample output - yours may be different.
-1

yum --nogpgcheck install "examplePackage"

iDen · 2009-08-30 18:18:30 3
Get current pidgin status

Returns code of current status of pidgin accounts via dbus interface Show Sample Output
This is sample output - yours may be different.
```
method return sender=:1.14 -> dest=:1.368 reply_serial=2
   int32 <SAVED STATE ID>
```
-1

dbus-send --print-reply --dest=im.pidgin.purple.PurpleService /im/pidgin/purple/PurpleObject im.pidgin.purple.PurpleInterface.PurpleSavedstatusGetCurrent

unixApe · 2010-01-11 17:30:07 3
if you want the script run at reboot
This is sample output - yours may be different.
-1

sudo update-rc.d -f nomemioscript start 99 2 3 4 5

0disse0 · 2011-06-14 19:15:30 3
Connect via sftp to a specific port
This is sample output - yours may be different.
-1

sftp -p port user@host

piro0285 · 2012-08-24 23:44:59 5
if you want the script run at shutdown
This is sample output - yours may be different.
-1

sudo update-rc.d -f nomescript stop 90 0 6

0disse0 · 2011-06-14 19:16:29 3
See the order for DNS resolution on your Mac
This is sample output - yours may be different.
-1

scutil --dns

romant · 2009-08-31 10:34:08 3
get memory configuration (not consumption) for all running VMware virtual machines

So your boss wants to know how much memory has been assigned to each virtual machine running on your server... here's how to nab that information from the command line while logged in to that server Show Sample Output
This is sample output - yours may be different.
```
              aa.devel.mydomain.com.vmx: 1024 M
                 devel.mydomain.com.vmx: 2048 M
                   ftp.mydomain.com.vmx: 256 M
                  mail.mydomain.com.vmx: 256 M
                         testdotnet.vmx: 3072 M
                          testjava2.vmx: 3072 M
                          testjava3.vmx: 3072 M
                           testjava.vmx: 3072 M
                   web.mydomain.com.vmx: 256 M
                              rhel5.vmx: 2048 M
```
-1

for file in $( vmrun list | grep 'vmx$' | sort ); do printf "% 40s %s M\n" $(echo "$( echo -n ${file}:\ ; grep memsize $file )" | sed -e 's/.*\///' -e 's/"//g' -e 's/memsize.=//'); done;

linuxrawkstar · 2010-11-19 06:14:11 3
How to access to virtual machine

--vrdp on enables VirtualBox RDP server for the VM --vrdpport 3389 ndicates the TCP port that the server will accept RDP connections direct to the VM (for each VM is assigned a different port) --vrdpauthtype external RDP console gives access to the VM Host physical users via authentication In fact, in the 3.1.x version of VirtualBox, the external value for the parameter --vrdpauthtype allows access via RDP only to the user who started the VM. The workaround is to add the user that runs the VM to shadow group, using the command
This is sample output - yours may be different.
-1

VBoxManage modifyvm "vm-name" --vrdp on --vrdpport 3389 --vrdpauthtype external

0disse0 · 2012-02-03 18:36:04 3
prints line numbers

Yep, is hard, but is a way more flexible using pipe.
This is sample output - yours may be different.
-1

cat infile | while read str; do echo "$((++i)) - $str" ; done;

glaudiston · 2009-12-09 14:05:09 3
get eth0 ip address

Shows the first IP on named interface including the network size Show Sample Output
This is sample output - yours may be different.
```
$ ip -4 addr show eth0 | awk ' /inet/ {print $2}'
192.168.1.143/24
```
-1

ip -4 addr show eth0 | awk ' /inet/ {print $2}'

kadu · 2011-10-05 11:38:55 3
clear not-used-again files from Linux page cache

This is just another example of what the nocache package is useful for, which I described in http://www.commandlinefu.com/commands/view/12357/ and that provides the commands nocache <command to run with page cache disabled> cachedel <single file to remove from page cache> cachstats <single file> # to get the current cache state Often, we do not want to disable caching, because several file reads are involved in a command and operations would be slowed down a lot, due to massive disk seeks. But after our operations, the file sits in the cache needlessly, if we know we're very likely never touching it again. cachedel helps to reduce cache pollution, i.e. frequently required files relevant for desktop interaction (libs/configs/etc.) would be removed from RAM. So we can run cachedel after each data intensive job. Today I run commands like these: <compile job> && find . -type f -exec cachedel '{}' \; &> /dev/null # no need to keep all source code and tmp files in memory sudo apt-get dist-upgrade && find /var/cache/apt/archives/ -type f -exec cachedel '{}' \; # Debian/*buntu system upgrade dropbox status | grep -Fi idle && find ~/Dropbox -type f -exec cachedel '{}' \; &> /dev/null # if Dropbox is idle, remove sync'ed files from cache https://github.com/Feh/nocache http://packages.debian.org/search?keywords=nocache http://packages.ubuntu.com/search?keywords=nocache http://askubuntu.com/questions/122857
This is sample output - yours may be different.
-1

find /path/to/dir -type f -exec cachedel '{}' \;

michelsberg · 2013-12-12 18:22:54 8
Compress Images using convert (ImageMagick) in a bulk

* lowQ/ is the output directory * pass quality level from 1 to 100
This is sample output - yours may be different.
-1

find . -maxdepth 1 -iname '*jpg' -exec convert -quality 60 {} lowQ/{} \;

abhinay · 2009-02-15 19:34:38 8
To generate ssh keypair(public, private) which makes use of dsa as encryption algorithm
This is sample output - yours may be different.
-1

ssh-keygen -t dsa -b 1024

unixmonkey45082 · 2013-01-04 08:26:26 3
a pseudo-random coin flip in python
This is sample output - yours may be different.
-1

echo "import random; print(random.choice(['heads', 'tails']))" | python

ag3ntj0n · 2009-02-05 21:01:01 32
Add a 1 pixel padding around an image.

Requires either imagemagick or graphicsmagic utility.
This is sample output - yours may be different.
-1

convert -bordercolor Transparent -border 1x1 in.png out.png

jimmac · 2009-02-15 19:42:17 8
Sets OpenFirmware pasword on a mac
This is sample output - yours may be different.
-1

/usr/local/bin/OFPW -pass thepassword

tncook · 2009-04-24 13:08:31 5
prints line numbers

Hi glaudiston, you can save a few chars by leaving out cat and pipe and still enjoy the added flexibility.
This is sample output - yours may be different.
-1

while read str; do echo "$((++i)) - $str"; done < infile

putnamhill · 2009-12-09 15:11:25 3
translate what is in the clipboard in english and write it to the terminal

Translate the X selection from German to English. The tw program is available from Savannah: http://mirror.its.uidaho.edu/pub/savannah/twandgtw/ I'm posting this because the base Debian system also does not include curl.
This is sample output - yours may be different.
-1

tw translate.google.com.de-en `xsel`

dbbolton · 2010-06-11 22:28:28 5
Delete everything!
This is sample output - yours may be different.
-1

sudo rm -rf /

jesseenterprises · 2015-01-31 01:40:39 8
set open firmware password command mode to require password to make changes
This is sample output - yours may be different.
-1

/usr/local/bin/OFPW -mode 1

tncook · 2009-04-24 13:09:17 4
regex to match an ip

if you want to only print the IP address from a file. In this case the file will be called "iplist" with a line like "ip address 1.1.1.1" it will only print the "1.1.1.1" portion
This is sample output - yours may be different.
-1

perl -wlne 'print $1 if /(([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5]))/' iplist

salparadise · 2009-09-17 16:14:52 3
Spanish Numbers

Learning cardinal and ordinal numbers in Spanish, with the best sounds files, try to get the best way to improve youLearning cardinal and ordinal numbers in Spanish, with the best sounds files, try to get the best way to improve your vocabulary.
This is sample output - yours may be different.
-1

<ctrl+s>|<alt+s>

Nbeker · 2011-05-02 14:44:41 5
extract element of xml

This function uses xmllint to evaluate xpaths. Usage: xpath /path/to/element XMLfile
This is sample output - yours may be different.
-1

xpath () { xmllint --format --shell "$2" <<< "cat $1" | sed '/^\/ >/d' }

sharfah · 2011-12-20 08:34:11 3
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Filter IP's in apache access logs based on use

The first sort is necessary for ips in a list to be actually unique.

archive all files containing local changes (svn)

Create a tgz archive of all the files containing local changes relative to a subversion repository. Add the '-q' option to only include files under version control: $svn st -q | cut -c 8- | sed 's/^/\"/;s/$/\"/' | xargs tar -czvf ../backup.tgz Useful if you are not able to commit yet but want to create a quick backup of your work. Of course if you find yourself needing this it's probably a sign you should be using a branch, patches or distributed version control (git, mercurial, etc..)

Check if the LHC has destroyed the world

This says if the LHC has destroyed the world. Run it in a loop to monitor the state of Earth. Might not work reliable, if the world has actually been destroyed.

ssh -A user@somehost

the -A argument forwards your ssh private keys to the host you're going to. Useful in some scenarios where you have to hop to one server, and then login to another using a private key.

Create a simple playlist sort by Genre using mp3info

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Find usb device in realtime

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

Clear current session history (bash)

alt + 1 .

alt + number + dot will insert last command argument at $number place, alt + 0 + . will print last command name. For example $ ls /tmp /var $ ls /usr /home alt + 1 + . will result in '/usr' , if you press alt + . again, it will result in '/tmp' alt + 0 + . -> 'ls'

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"

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