Commands tagged text (28)

  • Randomize lines (opposite of | sort)


    -1
    ls -1 | xargs ruby -e'puts ARGV.shuffle'
    jacaetevha · 2014-01-17 17:42:08 7
  • Extract text from picture [OCR reader]

    Image to text converter. Convert your scanned book in image format like .png, .jpg into editable text format. OCR ==> Optical Code Reader Show Sample Output


    -3
    gocr -i ~/Screenshot.png
    totti · 2013-02-28 07:38:13 5
  • Common key binding for 'less' to search for a string

    Use the following key binding to search ---------------------------------------------------------------- ng : Jump to line number n. Default is the start of the file. nG : Jump to line number n. Default is the end of the file. /pattern : Search for pattern. Regular expressions can be used. [/ = slash] Press / and then Enter to repeat the previous search pattern. Press ESC and then u to undo search highlighting. n : Go to next match (after a successful search). N : Go to previous match. mletter : Mark the current position with letter. 'letter : Return to position letter. [' = single quote] '^ or g : Go to start of file. '$ or G : Go to end of file. s : Save current content (got from another program like grep) in a file. = or Ctrl+g : File information. F : continually read information from file and follow its end. Useful for logs watching. Use Ctrl+c to exit this mode. -option : Toggle command-line option -option. h : Help.


    -4
    less file.ext
    totti · 2011-09-13 10:29:27 8
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Run a command only when load average is below a certain threshold
Good for one off jobs that you want to run at a quiet time. The default threshold is a load average of 0.8 but this can be set using atrun.

Convert spaces in file names to underscores

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

list folders containing less than 2 MB of data
This command will search all subfolders of the current directory and list the names of the folders which contain less than 2 MB of data. I use it to clean up my mp3 archive and to delete the found folders pipe the output to a textfile & run: $ while read -r line; do rm -Rv "$line"; done < textfile

Burn CD/DVD from an iso, eject disc when finished.
cdrecord -scanbus will tell you the (x,y,z) value of your cdr (for example, mine is 3,0,0)

Shows a specific process memory usage

Create a single PDF from multiple images with ImageMagick
Given some images (jpg or other supported formats) in input, you obtain a single PDF file with an image for every page.

Print sensors data for your hardware

batch convert Nikon RAW (nef) images to JPG
converts RAW files from a Nikon DSLR to jpg for easy viewing etc. requires ufraw package

a function to create a box of '=' characters around a given string.
First argument: string to put a box around. Second argument: character to use for box (default is '=') Same as command #4948, but shorter, and without the utility function.

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