Commands by eastwind (71)

  • 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

    ssh-keygen -G /tmp/moduli-2048.candidates -b 2048
    eastwind · 2010-01-29 19:33:23 4
  • 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

    set -o noclobber
    eastwind · 2010-01-08 21:06:44 8

  • 1
    lame -V2 rec01.wav rec01.mp3
    eastwind · 2010-01-01 06:09:46 5
  • just replace the number 5 with the variable you want , and the xpenguins software with the one you want Show Sample Output

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

    dumpe2fs -h /dev/DEVICE | grep 'created'
    eastwind · 2009-12-12 14:47:33 15

  • 1
    ffmpeg -i Your_video_file -s 320x240 FILE.flv
    eastwind · 2009-12-12 00:28:10 5

  • 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

  • -1
    locale | grep LANG=
    eastwind · 2009-12-10 07:24:01 6
  • The 1440 is the number of bytes, and the A: specifies the floppy drive.

    mformat -f 1440 A:
    eastwind · 2009-12-10 06:51:20 4
  • -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

    mount -t msdos /dev/fd0 /mnt/floppy
    eastwind · 2009-12-10 06:46:53 8

  • 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

  • 4
    mencoder infile.wmv -ofps 23.976 -ovc lavc -oac copy -o outfile.avi
    eastwind · 2009-12-08 19:50:50 4
  • require mimms package

    mimms mms://Your_url.wmv
    eastwind · 2009-12-08 14:45:12 5

  • -2
    apt-cache show Your_package
    eastwind · 2009-12-06 14:50:34 4

  • -2
    dpkg -L Your_Package
    eastwind · 2009-12-06 14:49:04 4
  • need imagemagick package Show Sample Output

    convert sample.pdf sample.jpg
    eastwind · 2009-12-05 19:27:37 9

  • 2
    mount -t iso9660 /dev/cdrom /media/cdrom
    eastwind · 2009-12-05 18:56:33 4
  • 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

    mencoder input.flv -ovc lavc -oac mp3lame -o output.avi
    eastwind · 2009-12-01 10:42:11 7
  • 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

    ls -al
    eastwind · 2009-11-12 12:27:32 7
  • this is a reference to Antoine de St. Exupery's "The Little Prince" Show Sample Output

    aptitude moo
    eastwind · 2009-11-12 12:24:01 8
  • require the pdftk package

    pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf
    eastwind · 2009-11-10 10:07:37 5
  • 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

    pdftk mydoc.pdf burst
    eastwind · 2009-11-10 09:00:50 4
  • require the tex4ht package . You can open the file with openoffice , I use it much for correct my spelling and grammar . Show Sample Output

    htlatex MyFile.tex "xhtml,ooffice" "ooffice/! -cmozhtf" "-coo -cvalidate"
    eastwind · 2009-11-05 10:12:28 5
  • set directly the wallpaper on windowmaker , use this command with display of imagemagick :) Show Sample Output

    wmsetbg -s -u path_to_wallpaper
    eastwind · 2009-10-21 11:23:54 4
  • 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

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

Rename file to same name plus datestamp of last modification.
Note that the -i will not help in a script. Proper error checking is required.

Rename files in batch

Generate a random password 30 characters long

Get AWS temporary credentials ready to export based on a MFA virtual appliance
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Find last reboot time
Specific to OSX.

Send an email from the terminal when job finishes
Might as well include the status code it exited with so you know right away if it failed or not.

Find your graphics chipset
Displays only the VGA adapter/chipset being used for the graphics. In this case, it gave me the "M22" and "Mobility Radeon x300" that I needed to research a graphics issue I was having.

Live stream a remote audio device over ssh using only ffmpeg
Change parameter 'plughw:0,0' in accordance with your audio device. To learn 'plughw' option, type the command aplay -l.

Function to create an alias on the fly
Is used like this: mkalias rmcache "rm -rfv app/cache/*"

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