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Commands tagged Linux from sorted by
Terminal - Commands tagged Linux - 231 results
read -p "Which station? "; mplayer --reallyquiet -vo none -ao sdl http://somafm.com/startstream=${REPLY}.pls
2009-05-04 00:26:19
User: denzuko
Functions: read
11

This command asks for the station name and then connects to somafm, Great for those who have linux home entertainment boxes and ssh enabled on them, just for the CLI fiends out there ( I know I'm one of them ;)

Also, don't forget to add this as alias(ie alias somafm="read -p 'Which Station? "; mplayer --reallyquite -vo none -ao sdl

for i in `screen -ls | perl -ne'if(/^\s+\d+\.([^\s]+)/){print $1, " "}'`; do gnome-terminal -e "screen -x $i"; done
2009-04-25 22:39:24
User: hank
Functions: perl
Tags: screen Linux perl
2

There was another line that was dependent on having un-named screen sessions. This just wouldn't do. This one works no matter what the name is. A possible improvement would be removing the perl dependence, but that doesn't effect me.

for i in /sys/class/net/*; do e=`basename $i`; echo "# $e"; sudo ethtool $e | grep -E "Link|Speed" ; done
2009-04-25 14:32:08
User: hank
Functions: echo grep sudo
Tags: Network Linux
0

Basically an improvement on an earlier ethtool command line.

lsof -i
sudo vi /etc/fstab; Go//smb-share/gino /mnt/place smbfs defaults,username=gino,password=pass 0 0<esc>:wq; mount //smb-share/gino
2009-04-02 16:04:35
User: GinoMan2440
Functions: mount sudo vi
4

the middle command between the ; and ; is the vi commands that insert that line into the last line of the file, the esc with the carets is literally hitting the escape key, you have to have the smbfs package installed to do it, I use it to access my iTunes music on my mac from my linux PC's with amarok so I can play the music anywhere in the house. among other things, it allows you to access the files on that share from your computer anytime you're on that network.

dstat -ta
for i in $(seq 1 11) 13 14 15 16; do man iso-8859-$i; done
2009-03-31 19:40:15
User: penpen
Functions: man seq
Tags: Linux unix
-2

Depending on the installation only certain of these man pages are installed. 12 is left out on purpose because ISO/IEC 8859-12 does not exist. To also access those manpages that are not installed use opera (or any other browser that supports all the character sets involved) to display online versions of the manpages hosted at kernel.org:

for i in $(seq 1 11) 13 14 15 16; do opera http://www.kernel.org/doc/man-pages/online/pages/man7/iso_8859-$i.7.html; done
wget --server-response --spider http://www.example.com/
2009-03-31 18:49:14
User: penpen
Functions: wget
5

Let me suggest using wget for obtaining the HTTP header only as the last resort because it generates considerable textual overhead. The first ellipsis of the sample output stands for

Spider mode enabled. Check if remote file exists.

--2009-03-31 20:42:46-- http://www.example.com/

Resolving www.example.com... 208.77.188.166

Connecting to www.example.com|208.77.188.166|:80... connected.

HTTP request sent, awaiting response...

and the second one looks for

Length: 438 [text/html]

Remote file exists and could contain further links,

but recursion is disabled -- not retrieving.

lynx -dump -head http://www.example.com/
2009-03-31 18:41:36
User: penpen
-1

Without the -dump option the header is displayed in lynx. You can also use w3m, the command then is

w3m -dump_head http://www.example.com/
rev <<< 'lorem ipsum' | tee /dev/stderr | rev
2009-03-31 13:12:09
User: penpen
Functions: rev tee
Tags: Linux unix
2

In the above example 'muspi merol' (the output of the first rev command) is sent to stderr and 'lorem ipsum' (the output of the second rev command) is sent to stdout. rev reverse lines of a file or files. This use of tee allows testing if a program correctly handles its input without using files that hold the data.

alias rot13="tr '[A-Za-z]' '[N-ZA-Mn-za-m]'"
2009-03-30 19:08:49
User: penpen
Functions: alias
Tags: Linux unix
9

rot13 maps a..mn..z (A..MN..Z) to n..za..m (n..za..m) and so does this alias.

watch -tn1 'bc<<<"`date -d'\''friday 21:00'\'' +%s`-`date +%s`"|perl -ne'\''@p=gmtime($_);printf("%dd %02d:%02d:%02d\n",@p[7,2,1,0]);'\'
2009-03-29 19:53:36
User: penpen
Functions: perl watch
Tags: Linux unix date
-2

An improved version of http://www.commandlinefu.com/commands/view/1772/simple-countdown-from-a-given-date that uses Perl to pretty-print the output. Note that the GNU-style '--no-title' option has been replaced by its one-letter counterpart '-t'.

iptables -F && iptables -X && iptables -P INPUT ACCEPT && iptables -OUTPUT ACCEPT
2009-03-27 15:03:54
User: lme
Functions: iptables
Tags: Linux iptables
0

This turns your iptables packet filter to a "Allow any from any to any" filter, so you can rule out any filtering issues when you have a problem to enable a connection from or to your host.

To re-enable it, run /etc/init.d/iptables restart

while true; do X=$Y; sleep 1; Y=$(ifconfig eth0|grep RX\ bytes|awk '{ print $2 }'|cut -d : -f 2); echo "$(( Y-X )) bps"; done
scrot -e 'mv $f \$HOME/shots/; sitecopy -u shots; echo "\$BASE/$f" | xsel -i; feh `xsel -o`'
2009-03-26 12:08:39
User: penpen
Functions: echo
-1

Here $HOME/shots must exist and have appropriate access rights and sitecopy must be correctly set up to upload new screen shots to the remote site.

Example .sitecopyrc (for illustration purposes only)

site shots

server ftp.example.com

username user

password antabakadesuka

local /home/penpen/shots

remote public_html/shots

permissions ignore

The command uses scrot to create a screen shot, moves it to the screen shot directory, uploads it using screen uses xsel to copy the URL to the paste buffer (so that you can paste it with a middle click) and finally uses feh to display a preview of the screen shot.

Note that $BASE stands for the base URL for the screen shots on the remote server, replace it by the actual location; in the example http://www.example.com/~user/shots would be fitting.

Assign this command to a key combination or an icon in whatever panel you use.

scrot -e 'mv $f \$HOME/public_html/shots/; echo "http://\$HOSTNAME/~\$USER/shots/$f" | xsel -i; feh `xsel -o`'
2009-03-26 11:32:09
User: penpen
Functions: echo
0

A web server using $HOME/public_html as user directory is required, $HOME/public_html/shots must exist and have appropriate access rights and $HOSTNAME must be known to and accessible from the outside world.

The command uses scrot to create a screen shot, moves it to the screen shot directory, uses xsel to copy the URL to the paste buffer (so that you can paste it with a middle click) and finally uses feh to display a preview of the screen shot.

Assign this command to a key combination or an icon in whatever panel you use.

cat /dev/cdrom > ~/mydisk.iso
2009-03-26 05:54:41
User: sata
Functions: cat
Tags: Linux
-10

Generate the iso from the disk, easily.

same as "dd if=/dev/cdrom of=~/mydisk.iso"

nc -l 8000
2009-03-25 23:09:38
User: penpen
Tags: Linux unix WWW
2

Have netcat listen on port 8000, point browser to http://localhost:8000/ and you see the information sent. netcat terminates as soon as your browser disconnects.

I tested this command on my Fedora box but linuxrawkstar pointed out that he needs to use

nc -l -p 8000

instead. This depends on the netcat version you use. The additional '-p' is required by GNU netcat that for example is used by Debian but not by the OpenBSD netcat port used by my Fedora system.

watch -n 1 :
2009-03-25 23:00:28
User: penpen
Functions: watch
Tags: Linux unix
-2

'watch' repeatedly (default every 2 seconds, -n 1 => every second) runs a command (here ':', a shorthand for 'true'), displays the output (here nothing) and the date and time of the last run.

I thought it to be obvious but it seemingly is not: to exit use Ctrl-C.

for i in $(pgrep -v -u root);do kill -9 $i;done
2009-03-24 02:54:52
User: lostnhell
Functions: kill
1

explanation:

grep -- displays process ids

-v -- negates the matching, displays all but what is specified in the other options

-u -- specifies the user to display, or in this case negate

The process loops through all PIDs that are found by pgrep, then orders a forced kill to the processes in numerical order, effectively killing the parent processes first including the shells in use which will force the users to logout.

Tested on Slackware Linux 12.2 and Slackware-current

echo 'wget url' | at 01:00
2009-03-21 06:19:40
User: Vlad003
Functions: at echo
16

Replace "url" with the correct address of what your're downloading. Replace 01:00 with what time you want. (24-hour clock).

alias pst='pstree -Alpha'
2009-03-20 10:53:37
User: Alexander
Functions: alias
Tags: Linux
0

By 'pst' you can print out process tree with all details about all processes (including a command line, PID, and the current process you are running in).

By 'pst username' you can get an information about processes belonging to the particular user 'username'.

sed ':a;N;$!ba;s/\n/ /g'
2009-03-17 20:54:04
User: cidiom
Functions: sed
Tags: Linux
0

Ever had a file with a list of numbers you wanted to add, use:

cat file | sed ':a;N;$!ba;s/\n/+/g' | bc
sort file1.txt | uniq > file2.txt
convert image123.png -colors 14 -resize 640x480 grubimg.xpm
2009-03-12 22:55:10
User: starchox
Tags: Linux grub boot
3

* size must be 640?480 pixels

* only has 14 colors

* save it in XPM format

Edit /boot/grub/menu.lst and add

splashimage=(hd0,0)/boot/grub/grubimg.xpm

make sure for your path name and hard disk