Commands tagged Linux sorted by votes

Commands tagged Linux (266)

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One command line web server on port 80 using nc (netcat)

-k, --keep-open will keep connection alive, and we could exclude using 'while true' nc is such a powerful command, it could be used instead of any OS! :p Show Sample Output
This is sample output - yours may be different.
```
/home/me> curl -i localhost:5432
HTTP/1.1 200 OK
Tue Nov 12 15:40:27 EET 2013


<p>How are you today?</p>
```
-2

nc -kl 5432 -c 'echo -e "HTTP/1.1 200 OK\r\n$(date)\r\n\r\n";echo "<p>How are you today?</p>"'

gvitalie · 2013-11-12 14:00:11 7
Sync two directories
This is sample output - yours may be different.
-2

rsync -a -v --delete sending_directory target_directory

shawn_abdushakur · 2014-02-08 21:07:37 6
Forward remote server CUPS port to localhost
This is sample output - yours may be different.
-2

ssh -NL 12345:localhost:631 username@remote_server

shawn_abdushakur · 2014-02-25 15:49:34 6
Move a file up a directory.

cd into the directory that contains the file. this is just the usual move command but shortcut'd. say you wanted to move a photo img1.png from ~/photos/holidayphotos into the parent directory which is ~/photos command would be: ~/photos/holidayphotos$ mv img1.png .. I use Ubuntu so this'll work in debian but not sure what else.
This is sample output - yours may be different.
-3

mv file_name.extension ..

takealeft · 2009-03-09 15:35:58 7
Get internal and external IP addresses

Gets the internal and external IP addresses of all your interfaces, or the ones given as arguments Show Sample Output
This is sample output - yours may be different.
```
nathan@lion:~$ ips
lo   127.0.0.1      127.0.0.1
eth0 192.168.1.2    80.106.232.129
nathan@lion:~$ ips eth0
eth0 192.168.1.2    80.106.232.129
```
-3

ips(){ for if in ${1:-$(ip link list|grep '^.: '|cut -d\ -f2|cut -d: -f1)};do cur=$(ifconfig $if|grep "inet addr"|sed 's/.*inet addr:$[0-9\.]*$.*/\1/g');printf '%-5s%-15s%-15s\n' $if $cur $(nc -s $cur sine.cluenet.org 128 2>/dev/null||echo $cur);done;}

frozenfire · 2009-08-07 10:04:46 3
Remote Screenshot

Like the given command, but combines _DISPLAY=":0.0"_ with _export DISPLAY_ to get _export DISPLAY=":0.0"_ and only imports if DISPLAY is set successfully.
This is sample output - yours may be different.
-3

export DISPLAY=":0.0" && import -window root screenshot.png

fraktil · 2010-02-17 12:13:49 3

Using wget to receive an XML atom feed of your Gmail inbox

I use this command in my Conky script to display the number of messages in my Gmail inbox and to list the from: and subject: fields. Show Sample Output

-3

wget -O - 'https://USERNAMEHERE:PASSWORDHERE@mail.google.com/mail/feed/atom' --no-check-certificate

PLA · 2010-09-26 14:47:13 6

Partition a new disk as all one partition tagged as

this work even if a partition table exist
This is sample output - yours may be different.
-3

echo -e "o\nn\np\n1\n\n\nw\n" | fdisk /dev/sdX

bunam · 2012-04-05 13:04:40 3
Find which version of Linux You are Running
This is sample output - yours may be different.
-4

lsb_release -d

tebeka · 2009-05-07 16:19:04 9
Combining text files into one file

the last person who posted used the most roundabout way to concatinate files, there's a reason there's a "conCATinate" command... Using this method, you also get to choose the order of the files, below another person just did *.txt > combined.txt which is fine but the order depends on the implementation of "cat" which is probably alphabetical order of filenames. Show Sample Output
This is sample output - yours may be different.
```
$cat stdHeader tableOfContents introduction body conclusion worksCited index  > researchPaper
$pwd; ls;
/home/ginoman/researchPapers/sample/
body                conclusion                index
introduction        researchPaper             stdHeader
tableOfContents     worksCited
$
```
-4

cat file1 ... fileN > combinedFile;

GinoMan2440 · 2010-04-17 01:00:04 4
Remove all unused kernels with apt-get
This is sample output - yours may be different.
-4

aptitude purge linux-image | grep ^i | grep -v $(uname -r)

lgallardo · 2010-06-11 22:20:42 5
ROT13 using the tr command

Will rot 13 whatever parameter follows 'rot13', whether it is a string or a file. Additionally, it will rot 5 each digit in a number
This is sample output - yours may be different.
-5

function rot13 { if [ -r $1 ]; then cat $1 | tr '[N-ZA-Mn-za-m5-90-4]' '[A-Za-z0-9]'; else echo $* | tr '[N-ZA-Mn-za-m5-90-4]' '[A-Za-z0-9]'; fi }

twjolson · 2011-03-18 09:59:41 4
Get all IPs via ifconfig

Get the IP address of all your network cards. Show Sample Output
This is sample output - yours may be different.
```
192.168.135.123
127.0.0.1
```
-6

ifconfig | grep "inet [[:alpha:]]\+" | cut -d: -f2 | cut -d' ' -f2

feraf · 2009-07-24 13:16:37 3
Get colorful fortunes

Get colorful fortunes dictated by an ASCII cow. For full enjoyment you'll need to have color setup enabled for your terminal.
This is sample output - yours may be different.
-6

cowsay `fortune` | toilet --metal -f term

seattlegaucho · 2010-06-03 21:48:54 4
Create a iso from the disk.

Generate the iso from the disk, easily. same as "dd if=/dev/cdrom of=~/mydisk.iso"
This is sample output - yours may be different.
-10

cat /dev/cdrom > ~/mydisk.iso

sata · 2009-03-26 05:54:41 29
Combining text files into one file
This is sample output - yours may be different.
-16

ls | grep *.txt | while read file; do cat $file >> ./output.txt; done;

octopus · 2010-04-16 13:19:38 6
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Selecting a random file/folder of a folder

Also looks in subfolders

convert video to gif by ffmpeg and imagemagick

you can use any common video format. if you don't need to change the size of gif output, just remove `-vf scale=320:-1` btw, 320:-1 means width is 320px and height would be set automatically

Find removed files still in use via /proc

Oracle DBA remove some logfiles which are still open by the database and he is complaining the space has not been reclaimed? Use the above command to find out what PID needs to be stopped. Or alternatively recover the file via: $ cp /proc/pid/fd/filehandle /new/file.txt

Look for IPv4 address in files.

It finds a SNMP OID too :-(

Install pip with Proxy

Installs pip packages defining a proxy

Find removed files still in use via /proc

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

Force an fsck on reboot

Force an fsck on reboot. Useful on a system where / has mounted read-only because of file system issues.

iso-8859-1 to utf-8 safe recursive rename

This command is a powerful "detoxifier" that eliminates special chars, spaces and all those little chars we don't like. It support several "sequences" so be sure to check your /usr/local/etc/detoxrc while at it... and maybe define your own

Arch Linux: Always install software without asking

Adding this alias to ~/.bashrc or, better yet, the system-wide /etc/bash.bashrc (as in my setup) will make it possible to not only run pacman as any user without needing to prepend sudo but will also ensure that it always assumes that the user knows what he or she is doing. Not the best thing for large multi-user enterprise setups at all to say the least, but for home (desktop) use, this is a fantastic time-saver.

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Commands tagged Linux (266)

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