Commands by HerbCSO (2)

  • Find last modified files in a directory and its subdirectories

    Goes through all files in the directory specified, uses `stat` to print out last modification time, then sorts numerically in reverse, then uses cut to remove the modified epoch timestamp and finally head to only output the last 10 modified files. Note that on a Mac `stat` won't work like this, you'll need to use either: find . -type f -print0 | xargs -0 stat -f '%m%t%Sm %12z %N' | sort -nr | cut -f2- | head or alternatively do a `brew install coreutils` and then replace `stat` with `gstat` in the original command. Show Sample Output


    5
    find . -type f -print0 | xargs -0 stat -c'%Y :%y %12s %n' | sort -nr | cut -d: -f2- | head
    HerbCSO · 2013-08-03 09:53:46 13
  • Count number of files in subdirectories

    For each directory from the current one, list the counts of files in each of these directories. Change the -maxdepth to drill down further through directories. Show Sample Output


    2
    find . -maxdepth 1 -type d -exec sh -c "printf '{} ' ; find '{}' -type f -ls | wc -l" \;
    HerbCSO · 2013-07-29 19:46:35 10

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Convert seconds to [DD:][HH:]MM:SS
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convert UNIX timestamp to UTC timestamp
date -ud @1320198157

Find files and calculate size of result in shell
Find files and calculate size with stat of result in shell

Get the size of all the directories in current directory (Sorted Human Readable)
This allows the output to be sorted from largest to smallest in human readable format.

kde4 lock screen command
If you wish to launch the kde4 screen saver without the password prompt to exit, use this command: $ qdbus org.freedesktop.ScreenSaver /ScreenSaver org.freedesktop.ScreenSaver.SetActive True Also can be done with: $ /usr/lib/kde4/libexec/kscreenlocker --forcelock

List the Sizes of Folders and Directories
I wanted an easy way to list out the sizes of directories and all of the contents of those directories recursively.

small CPU benchmark with PI, bc and time.
$ # 4 cores with 2500 pi digits $ CPUBENCH 4 2500 $. $ every core will use 100% cpu and you can see how fast they calculate it. $ if you do 50000 digitits and more it can take hours or days

Extract audio from Flash video (*.flv) as mp3 file

Manipulate the metadata and edit the create time (This will change date to 1986:11:05 12:00 - Date: 1986 5th November, Time: 12.00) and then it will set modify date to the same as alldate.

Prints new content of files
Useful to e.g. keep an eye on several logfiles.

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