All commands (14,187)

  • I must monitorize a couple of ftp servers every morning WITHOUT a port-scanner Instead of ftp'ing on 100 ftp servers manually to test their status I use this loop. It might be adaptable to other services, however it may require a 'logout' string instead of 'quit'. The file ftps.txt contains the full list of ftp servers to monitorize.


    1
    for host in $(cat ftps.txt) ; do if echo -en "o $host 21\nquit\n" |telnet 2>/dev/null |grep -v 'Connected to' >/dev/null; then echo -en "FTP $host KO\n"; fi done
    vlan7 · 2010-01-26 15:34:18 3
  • Recursive grep through directory for file.


    -5
    find directory/ |xargs grep -i "phrase"
    tuxtutorials · 2010-01-26 14:56:56 3
  • no loop, only one call of grep, scrollable ("less is more", more or less...)


    12
    ls /usr/bin | xargs whatis | grep -v nothing | less
    michelsberg · 2010-01-26 12:59:47 32
  • Useful for Maven multimodule projects, where you want to extract all packaged jar files.


    -3
    find . -iname "*.jar" -exec cp '{}' /tmp/ \;
    unixmonkey6754 · 2010-01-26 12:19:15 3
  • This command has been used to overwrite corrupted "entries" files of a corrupted subversion working copy. Note the --files-from input format.


    3
    rsync -vd --files-from=<(find . -name entries -print ) . ../target_directory
    samyboy · 2010-01-26 09:41:12 6
  • This command toggles the touchpad on and off, when it's on, the right side scroll strip (annoying) and the tap-clicking are disabled, you can change this by changing occurances of 2 in the command to 0. this whole command can then be given a keyboard shortcut so that the touchpad is disableable without using a special fn key (which linux doesn't recognize on some computers) or a seperate button.


    -3
    if [ $(synclient -l | grep TouchpadOff | awk '{print $3}') = "2" ]; then synclient TouchpadOff=1; elif [ $(synclient -l | grep TouchpadOff | awk '{print $3}') == "1" ]; then synclient TouchpadOff=2; else synclient TouchpadOff=2; fi
    GinoMan2440 · 2010-01-26 07:52:55 5

  • 1
    find . -maxdepth 1 -type d -exec 'mv "{}" "{}-old" && svnadmin create "{}" && svnadmin recover "{}-old" && svnadmin dump "{}-old" | svnadmin load "{}" && rm -rf "{}-old"' \;
    raspi · 2010-01-26 07:06:43 3

  • 7
    for i in $(ls /usr/bin); do whatis $i | grep -v nothing; done | more
    Abiden · 2010-01-26 06:15:54 7

  • -2
    7za x \*.zip
    andrew112358 · 2010-01-25 21:50:15 2
  • Traditionally we rewind a tape using this syntaxis: mt -f /dev/rmt/0cbn rewind Redirecting the dispositive to nothing as shown above is faster. Less typing is always better.


    2
    < /dev/rmt/0cbn
    vlan7 · 2010-01-25 20:32:38 3

  • -1
    find . -maxdepth 1 -type f| xargs sha1sum | sed 's/^\(\w*\)\s*\(.*\)/\2 \1/' | while read LINE; do mv $LINE; done
    foremire · 2010-01-25 20:21:01 11
  • for example if you did a: ls -la /bin/ls then ls !$ is equivalent to doing a ls /bin/ls


    9
    !$
    ringlerun · 2010-01-24 17:59:52 23
  • running top command in batch mode. it is usefull if you want to redirect the output in a file. Show Sample Output


    2
    top -b -n 1
    r00t4u · 2010-01-24 16:17:30 5

  • 0
    dpkg -l | grep ^rc | awk '{print $2}' | sudo xargs dpkg -P
    kayowas · 2010-01-24 14:23:37 4
  • Use find's built-in ability to call programs. Alternatively, find -maxdepth 1 -type f -name "*.7z" -print0 | xargx -0 -n 1 7zr e would work, too.


    -1
    find -maxdepth 1 -type f -name "*.7z" -exec 7zr e '{}' ';'
    minnmass · 2010-01-23 19:50:10 4

  • 0
    find . -type f -exec stat \{\} \; | grep Modify: | awk '{a[$2]++}END{for(i in a){print i " : " a[i] }}' | sort
    pepin · 2010-01-23 07:55:16 6
  • Restores the keyboard so your partner who expects the keys to correspond to what they're labelled can type (in qwerty).


    -2
    setxkbmap us
    keturn · 2010-01-23 04:08:46 4
  • What to type to fix the keyboard when it's all qwerty and/or the modifier key to the left of the 'a' is doing something unexpected. In addition, I've also been known to use the altwin:meta_win and compose:ralt flags.


    0
    setxkbmap dvorak '' ctrl:nocaps
    keturn · 2010-01-23 04:04:59 3
  • A command to post a message to Twitter that includes your geo-location and a short URL. The link shortening service is provide by TinyURL, the geo-location service is provided by HostIP and the IP address lookup service is provided by AppSpot. This is an upgrade of an of one of my previous contributions: http://tinyurl.com/yd2xtzv.


    4
    curl --user "USERNAME:PASSWORD" -d status="MESSAGE_GOES_HERE $(curl -s tinyurl.com/api-create.php?url=URL_GOES_HERE) $(curl -s api.hostip.info/get_html.php?ip=$(curl ip.appspot.com))" -d source="cURL" twitter.com/statuses/update.json -o /dev/null
    o0110o · 2010-01-23 02:21:57 11

  • -7
    scp /home/svnlabs.txt root@92.178.0.56:/home/
    bakhru · 2010-01-22 21:19:37 5

  • 10
    nmap -T4 -sP 192.168.2.0/24 && egrep "00:00:00:00:00:00" /proc/net/arp
    wincus · 2010-01-22 20:36:43 8

  • 3
    for file in *.7z; do 7zr e "$file"; done
    jmcantrell · 2010-01-22 18:42:20 11
  • Connect EC2 server with public keys "/root/.ec2/id_rsa-gsg-keypair" or "/root/.ec2/keypair.pem"


    -2
    rsync -avvvz -e "ssh -i /root/.ec2/id_rsa-gsg-keypair" --archive --progress /root/.ec2/id_rsa-gsg-keypair root@ec2-75-101-212-113.compute-1.amazonaws.com:/root
    lalit241 · 2010-01-22 17:21:58 3
  • Upload file to remote server using SCP


    -9
    scp -P 22 /home/svnlabs.txt root@92.178.0.56:/home/svnlabs.txt
    lalit241 · 2010-01-22 17:21:07 3
  • Upload file to remote server using SCP


    -6
    scp -P 22 /home/svnlabs.txt root@92.178.0.56:/home/svnlabs.txt
    svnlabs · 2010-01-22 16:55:25 4
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Quick and dirty RSS
runs an rss feed through sed replacing the closing tags with newlines and the opening tags with white space making it readable.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Find files that were modified by a given command
Traces the system calls of a program. See http://linuxhelp.blogspot.com/2006/05/strace-very-powerful-troubleshooting.html for more information.

Check wireless link quality with dialog box
The variable WIRELESSINTERFACE indicates your wireless interface

Perform a branching conditional
This will perform one of two blocks of code, depending on the condition of the first. Essentially is a bash terniary operator. To tell if a machine is up: $ ping -c1 machine { echo succes;} || { echo failed; } Because of the bash { } block operators, you can have multiple commands $ ping -c1 machine && { echo success;log-timestamp.sh }|| { echo failed; email-admin.sh; } Tips: Remember, the { } operators are treated by bash as a reserved word: as such, they need a space on either side. If you have a command that can fail at the end of the true block, consider ending said block with 'false' to prevent accidental execution

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

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

Convert all WMF images to SVG recursively ignoring file extension case
This assumes you have the package installed necessary for converting WMF files. On my Ubuntu box, this is libwmf-bin. I used this command, as libwmf is not on my wife's iMac, so I archived the directories containing the WMF files from OS X, ran them on my Ubuntu box, archived the resulting SVGs, and sent them back to her. Quick, simple and to the point. Searches directories recursively looking for extensions ignoring case. This is much more readable and clean than -exec for find. The while loop also gives further flexibility on complex logic. Also, although there is 'wmf2svg --auto', it expects lowercase extensions, and not uppercase. Because I want to ignore case, I need to use the -o option instead. Works in ZSH and BASH. Haven't tested in other shells.

Find out current working directory of a process
This is an alternative to another command using two xargs. If it's a command you know there's only one of, you can just use: $ ls -l /proc/$(pgrep COMMAND)/cwd

Capture data in ASCII. 1500 bytes
Sniffing traffic on port 80 only the first 1500 bytes


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