Commands by eastwind (71)

  • generate the moduli file for openssh if lost

    if you lost your moduli file in openssh server side you need generate new one with this command then test if the number generated can be used with ssh-keygen -T moduli-2048 -f /tmp/moduli-2048.candidates


    0
    ssh-keygen -G /tmp/moduli-2048.candidates -b 2048
    eastwind · 2010-01-29 19:33:23 4
  • Prevent overwriting file when using redirection

    If you set noclobber to on, bash won't allow redirection to overwrite existing files . set -o noclobber command turn the option on (default it s off ) . You can still append information but not overwrite the file .to turn it back off use : $ set +o noclobber . I use it because i overwrite a file by accident , after thought , content of the file was very important , creating a one more file mean nothing for my hard disk (we are not anymore on the 64 k memory time) , but content of file is far much important . What we call exeprience :( Show Sample Output


    2
    set -o noclobber
    eastwind · 2010-01-08 21:06:44 8
  • convert wav into mp3 using lame


    1
    lame -V2 rec01.wav rec01.mp3
    eastwind · 2010-01-01 06:09:46 5
  • oneliner to open several times same application

    just replace the number 5 with the variable you want , and the xpenguins software with the one you want Show Sample Output


    -2
    i="0"; while [ $i -lt 5 ] ; do xpenguins & i=$[$i+1] ; done
    eastwind · 2009-12-27 21:05:33 4
  • Show when filesystem was created

    Knowing when a filesystem is created , you can deduce when an operating system was installed . find filesystem device (/dev/) informations by using the cat /etc/fstab command. Show Sample Output


    7
    dumpe2fs -h /dev/DEVICE | grep 'created'
    eastwind · 2009-12-12 14:47:33 18
  • convert video format to youtube flv format

    Show Sample Output


    1
    ffmpeg -i Your_video_file -s 320x240 FILE.flv
    eastwind · 2009-12-12 00:28:10 5
  • add an mp3 audio track to a video

    Show Sample Output


    1
    mencoder -idx Your_Input_Video_File -ovc lavc -oac mp3lame -audiofile Your_Audio_track.mp3 -o Output_File.avi
    eastwind · 2009-12-11 23:50:37 4
  • show your locale language keyboard setting

    Show Sample Output


    -1
    locale | grep LANG=
    eastwind · 2009-12-10 07:24:01 6
  • Format a flooppy with windows compatible disk

    The 1440 is the number of bytes, and the A: specifies the floppy drive.


    -1
    mformat -f 1440 A:
    eastwind · 2009-12-10 06:51:20 4
  • mount a msdos formated floppy disk

    -t option tells the system to look for a msdos filesystem The /dev/fd0 is your floppy drive ( This may be different for you check /dev folder to confirm) /mnt/floppy is the point where you want to mount the device to


    -2
    mount -t msdos /dev/fd0 /mnt/floppy
    eastwind · 2009-12-10 06:46:53 8
  • convert wmv into xvid avi format


    1
    mencoder -ovc xvid -oac mp3lame -srate 44100 -af lavcresample=44100 -xvidencopts fixed_quant=4 Foo.wmv -o Bar.avi
    eastwind · 2009-12-10 06:46:11 4
  • Convert wmv into avi


    4
    mencoder infile.wmv -ofps 23.976 -ovc lavc -oac copy -o outfile.avi
    eastwind · 2009-12-08 19:50:50 4
  • Download streaming video in mms

    require mimms package


    1
    mimms mms://Your_url.wmv
    eastwind · 2009-12-08 14:45:12 6
  • Show the meta information on a package (dependency , statuts ..) on debian derivative distro

    Show Sample Output


    -2
    apt-cache show Your_package
    eastwind · 2009-12-06 14:50:34 4
  • List content of a package (debian derivative distro)

    Show Sample Output


    -2
    dpkg -L Your_Package
    eastwind · 2009-12-06 14:49:04 4
  • convert pdf to graphic file format (jpg , png , tiff ... )

    need imagemagick package Show Sample Output


    5
    convert sample.pdf sample.jpg
    eastwind · 2009-12-05 19:27:37 9
  • mount a cdrom


    2
    mount -t iso9660 /dev/cdrom /media/cdrom
    eastwind · 2009-12-05 18:56:33 4
  • convert flv into avi file and mp3 sound

    Detect video size automatically , usually the flv video from youtube , dailymotion are in the /tmp directory . Just launch a video player or an ls -lh on it to find the one you want to convert. Show Sample Output


    0
    mencoder input.flv -ovc lavc -oac mp3lame -o output.avi
    eastwind · 2009-12-01 10:42:11 7
  • show the last modified date on directory and file

    it does provide much more information , the owner , group , the size in byte , and the last modified time a file or directory was ls -al : list all in long format Show Sample Output


    -11
    ls -al
    eastwind · 2009-11-12 12:27:32 7
  • aptitude easter eggs

    this is a reference to Antoine de St. Exupery's "The Little Prince" Show Sample Output


    6
    aptitude moo
    eastwind · 2009-11-12 12:24:01 8
  • Merge Two or More PDFs into a New Document

    require the pdftk package


    8
    pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf
    eastwind · 2009-11-10 10:07:37 8
  • Burst a Single PDF Document into Single Pages and Report its Data to doc_data.txt

    Require the pdftk package It ll split each page in your pdf file , into a new pdf file and report info on doc_data.txt Show Sample Output


    3
    pdftk mydoc.pdf burst
    eastwind · 2009-11-10 09:00:50 5
  • convert a latex source file (.tex) into opendocument (.odt ) format

    require the tex4ht package . You can open the file with openoffice , I use it much for correct my spelling and grammar . Show Sample Output


    2
    htlatex MyFile.tex "xhtml,ooffice" "ooffice/! -cmozhtf" "-coo -cvalidate"
    eastwind · 2009-11-05 10:12:28 5
  • set wallpaper on windowmaker in one line

    set directly the wallpaper on windowmaker , use this command with display of imagemagick :) Show Sample Output


    1
    wmsetbg -s -u path_to_wallpaper
    eastwind · 2009-10-21 11:23:54 4
  • create a motion jpeg (MJPEG) with the jpg file from current directory with mencoder

    syntax : mencoder mf://filemask -mf option availble for mf : * w=value : the width of the output, by d?fault : autodetected * h=value : height of the output, by default : autodetected * fps=value : framerate of the output, by default : 25 * type=value : file format type input , avaible: jpeg, png, tga, sgi


    -1
    mencoder mf://image1.jpg,image2.jpg,image3.jpg -mf w=800:h=600:fps=25:type=jpeg -ovc copy -oac copy -o output.avi
    eastwind · 2009-10-21 09:17:22 3
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Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Grep Recursively Through Single File Extension
Trac 0.12.2-stable

Validating a file with checksum

Check the hard disk vendor and model on Apple Mac

Run the Firefox Profile Manager
even when another instance is already open. Great for testing purposes when you need to be 2 people at once on the same site.

Pimp your less
# s = combine multiple lines of whitespace into 1 # x4 = set the tabstop to 4 instead of 8 # F = Exit if the output fits on 1 screen. This is similar to git diff # R = Raw control chars. This allows you to pipe colordiff straight to less. ie: alias sdi="svn diff | colordiff | less" # S = Chop off long lines # X = Dont send termcap init and deinit scrings to the terminal

View the current number of free/used inodes in a file system
tune2fs also provides the same information . But the information does not give the current usage , it gives the information when the file system was last mounted. http://www.zaman4linux.in/2010/10/using-up-all-the-free-inodes.html

Print github url for the current url
Works for repos cloned via ssh or https.

Run a command as root, with a delay
$ sleep 1h ; sudo command or $ sudo sleep 1h ; sudo command won't work, because by the time the delay is up, sudo will want your password again.

Annoying PROMPT_COMMAND animation
unset PROMPT_COMMAND to disable.

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