Commands by smcpherson (6)

  • This is useful for sending data between 2 computers that you have shell access to. Uses tar compression during transfer. Files are compressed & uncompressed automatically. Note the trailing dash on the listening side that makes netcat listen to stdin for data. on the listening side: sudo nc -lp 2022 | sudo tar -xvf - explanation: open netcat to -l listen on -p port 2022, take the data stream and pipe to tar -x extract, -v verbose, -f using file filename - means "stdin" on the sending side: tar -cvzf - ./*| nc -w 3 name_of_listening_host 2022 explanation: compress all files in current dir using tar -c create, -v verbose, -f using file, - filename - here means "stdout" because we're tar -c instead of tar -x, -w3 wait 3 seconds on stream termination and then end the connection to the listening host name_of_listening_host, on port 2022


    -2
    on the listening side: sudo nc -lp 2022 | sudo tar -xvf - and on the sending side: tar -cvzf - ./*| nc -w 3 name_of_listening_host 2022
    smcpherson · 2009-03-27 09:59:33 7
  • Good old cat & output redirection. Using this method you can combine all kinds of things - even mpeg files. My video camera makes a series of .mpeg files that are broken into 4gb chunks. Using this command I can easily join them together. Even better, combined with the cp command the files can be copied and joined in one step.


    2
    cat *.mpg > all.mpg
    smcpherson · 2009-03-27 04:49:18 4
  • This is useful if you have a collection of files in folders (for example, a bunch of .zip files that are contained in folders) and you want to move them all to a common folder.


    -8
    mv `find .zip ./` .
    smcpherson · 2009-03-27 04:42:48 5

  • 0
    ffmpeg -i "/path/to/file.mp4" "/path/to/file.avi"
    smcpherson · 2009-03-27 04:36:41 2

  • 1
    mencoder "/path/to/file.wmv" -ofps 23.976 -ovc lavc -oac copy -o "/path/to/file.avi"
    smcpherson · 2009-03-27 04:35:08 3
  • Assuming you are working within a git repository, you can run the above command & see what has changed in reverse chronological order, with one commit per line. Other formatting variations to 'oneline' include 'short', 'medium', 'full', 'fuller', 'email' or 'raw'. Show Sample Output


    2
    git log --pretty=oneline
    smcpherson · 2009-03-27 04:16:43 0

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Reinstall Grub

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Grep syslog today last hour
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