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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Simple Comment an entire file

With this simple sed command we can easily comment and entire file.

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"

Get IPv4 of eth0 for use with scripts

Simple and easy. No regex, no search and replace. Just clean, built-in tools.

Create and access directory at the same time

The previous alternative dont work (the cd command was missing).

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"

Makes you look busy

This makes an alias for a command named 'busy'. The 'busy' command opens a random file in /usr/include to a random line with vim. Drop this in your .bash_aliases and make sure that file is initialized in your .bashrc.

paste one file at a time instead of in parallel

Delete more than one month old thumbnails from home directory

By time thumbnail images in ~/thumbnails take up too much space, this command will help deleting old ones. Find options explained: -type f : find files only, not directories -atime +30 : last accessed more than 30 days ago

Securely destroy data on given device hugely faster than /dev/urandom

This command generates a pseudo-random data stream using aes-256-ctr with a seed set by /dev/urandom. Redirect to a block device for secure data scrambling.

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Commands tagged Linux (266)

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