Commands tagged Linux (253)

  • Basically an improvement on an earlier ethtool command line. Show Sample Output


    0
    for i in /sys/class/net/*; do e=`basename $i`; echo "# $e"; sudo ethtool $e | grep -E "Link|Speed" ; done
    hank · 2009-04-25 14:32:08 5

  • 90
    lsof -i
    hank · 2009-04-25 14:24:04 7
  • 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.


    4
    sudo vi /etc/fstab; Go//smb-share/gino /mnt/place smbfs defaults,username=gino,password=pass 0 0<esc>:wq; mount //smb-share/gino
    GinoMan2440 · 2009-04-02 16:04:35 3
  • This is a very powerful command line tool to gather statistics for a Linux system. http://dag.wieers.com/home-made/dstat/ Show Sample Output


    7
    dstat -ta
    vutcovici · 2009-04-02 14:19:12 1
  • 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


    -2
    for i in $(seq 1 11) 13 14 15 16; do man iso-8859-$i; done
    penpen · 2009-03-31 19:40:15 1
  • 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. Show Sample Output


    7
    wget --server-response --spider http://www.example.com/
    penpen · 2009-03-31 18:49:14 6
  • 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/ Show Sample Output


    -1
    lynx -dump -head http://www.example.com/
    penpen · 2009-03-31 18:41:36 1
  • 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. Show Sample Output


    2
    rev <<< 'lorem ipsum' | tee /dev/stderr | rev
    penpen · 2009-03-31 13:12:09 2
  • rot13 maps a..mn..z (A..MN..Z) to n..za..m (n..za..m) and so does this alias.


    10
    alias rot13="tr '[A-Za-z]' '[N-ZA-Mn-za-m]'"
    penpen · 2009-03-30 19:08:49 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'. Show Sample Output


    -2
    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]);'\'
    penpen · 2009-03-29 19:53:36 3
  • 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


    0
    iptables -F && iptables -X && iptables -P INPUT ACCEPT && iptables -OUTPUT ACCEPT
    lme · 2009-03-27 15:03:54 0

  • 10
    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
    stuntdawg · 2009-03-27 08:26:39 2
  • 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. Show Sample Output


    -1
    scrot -e 'mv $f \$HOME/shots/; sitecopy -u shots; echo "\$BASE/$f" | xsel -i; feh `xsel -o`'
    penpen · 2009-03-26 12:08:39 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.


    0
    scrot -e 'mv $f \$HOME/public_html/shots/; echo "http://\$HOSTNAME/~\$USER/shots/$f" | xsel -i; feh `xsel -o`'
    penpen · 2009-03-26 11:32:09 1
  • Generate the iso from the disk, easily. same as "dd if=/dev/cdrom of=~/mydisk.iso"


    -10
    cat /dev/cdrom > ~/mydisk.iso
    sata · 2009-03-26 05:54:41 19
  • 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. Show Sample Output


    2
    nc -l 8000
    penpen · 2009-03-25 23:09:38 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.


    -2
    watch -n 1 :
    penpen · 2009-03-25 23:00:28 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


    1
    for i in $(pgrep -v -u root);do kill -9 $i;done
    lostnhell · 2009-03-24 02:54:52 2
  • 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'. Show Sample Output


    0
    alias pst='pstree -Alpha'
    Alexander · 2009-03-20 10:53:37 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


    0
    sed ':a;N;$!ba;s/\n/ /g'
    cidiom · 2009-03-17 20:54:04 5

  • 3
    sort file1.txt | uniq > file2.txt
    rain · 2009-03-14 20:24:06 6
  • * 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


    3
    convert image123.png -colors 14 -resize 640x480 grubimg.xpm
    starchox · 2009-03-12 22:55:10 0
  • NOT MINE! Taken from hackzine.com blog. It creates a tree-style output of all the (sub)folders and (sub)files from the current folder and down(deeper) Quoting some of hackzine's words "Murphy Mac sent us a link to a handy find/sed command that simulates the DOS tree command that you might be missing on your Mac or Linux box. [..split...] Like most things I've seen sed do, it does quite a bit in a single line of code and is completely impossible to read. Sure it's just a couple of substitutions, but like a jack in the box, it remains a surprise every time I run it." Show Sample Output


    -1
    find . -print | sed -e 's;[^/]*/;|____;g;s;____|; |;g'
    JesusSuperstar · 2009-03-12 22:25:26 4
  • 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.


    -3
    mv file_name.extension ..
    takealeft · 2009-03-09 15:35:58 1
  • Suppose you made a backup of your hard disk with dd: dd if=/dev/sda of=/mnt/disk/backup.img This command enables you to mount a partition from inside this image, so you can access your files directly. Substitute PARTITION=1 with the number of the partition you want to mount (returned from sfdisk -d yourfile.img). Show Sample Output


    6
    INFILE=/path/to/your/backup.img; MOUNTPT=/mnt/foo; PARTITION=1; mount "$INFILE" "$MOUNTPT" -o loop,offset=$[ `/sbin/sfdisk -d "$INFILE" | grep "start=" | head -n $PARTITION | tail -n1 | sed 's/.*start=[ ]*//' | sed 's/,.*//'` * 512 ]
    Alanceil · 2009-03-06 21:29:13 3
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find and delete empty dirs, start in current working dir

Show complete URL in netstat output
This takes all of the tab spaces, and uses column to put them into the appropriately sized table.

Find the biggest files
Also: * find . -type f -exec ls -s {} \; | sort -n -r | head -5 * find . -type f -exec ls -l {} \; | awk '{print $5 "\t" $9}' | sort -n -r | head -5

for too many arguments by *
$ grep ERROR *.log -bash: /bin/grep: Argument list too long $ echo *.log | xargs grep ERROR /dev/null 20090119.00011.log:DANGEROUS ERROR

Create a single-use TCP proxy with copy to stdout
USAGE: gate listening_port host port Creates listening socket and connects to remote device at host:port. It uses pipes for connection between two sockets. Traffic which goes through pipes is wrote to stdout. I use it for debug network scripts.

show all key and mouse events
for mousevents, move the mouse over the window and click/move etc. usefull for getting mouseKeys, or keyKeys. also usefull for checking if X gets those mouse-events.

Terminal Keyboard Shortcut list
This command will give you a list of available keyboard shortcuts according to stty.

Display top 5 processes consuming CPU

Calculate days on which Friday the 13th occurs
I removed the dependency of the English language

Find the package that installed a command


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