Commands by qubyte (3)

  • Puts every word from a file into a new line

    Puts words on new lines, removing additional newlines.


    -1
    < <infile> tr ' \t' '\n' | tr -s '\n' > <outfile>
    qubyte · 2009-07-07 01:17:47 3
  • Grab your bibtex file from CiteULike.

    I love CiteULike. It makes keeping a bibtex library easy and keeps all my papers in one place. However, it can be a pain when I add new entries and have to go through the procedure for downloading the new version in my browser, so I made this to grab it for me! I actually pipe it directly into a couple of SED one liners to tidy it up a bit too. Extremely useful, especially if you make a custom BibTeX script that does this first. That way you can sort a fresh BibTeX file for each new paper with no faf. To use just replace with your CiteULike user name. It doesn't download entries that you've hidden but I don't use that feature anyway.


    -1
    curl -o <bibliography> "http://www.citeulike.org/bibtex/user/<user>"
    qubyte · 2009-03-26 23:08:14 2
  • Remove embedded fonts from a pdf.

    It's sometimes useful to strip the embedded fonts from a pdf, for importing into something like Inkscape. Be warned, this will increase the size of a pdf substantially. I tried this with only gs writing with -sDEVICE=pdfwrite but it doesn't seem to work, so I just pipe postscript output to ps2pdf for the same effect.


    1
    gs -sDEVICE=pswrite -sOutputFile=- -q -dNOPAUSE With-Fonts.pdf -c quit | ps2pdf - > No-Fonts.pdf
    qubyte · 2009-03-25 03:46:00 6

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Convert entire audio library in parallel
Uses parallel processing Reiteration of my earlier command https://www.commandlinefu.com/commands/view/15246/convert-entire-music-library Usage lc Old_Directory New_DIrectory Old_Format New_Format lc ~/Music ~/Music_ogg mp3 ogg

Show what PID is listening on port 80 on Linux

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Find the package that installed a command

Given process ID print its environment variables
Same as previous but compatible with BSD/IPSO

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Multi-thread any command
For instance: $ find . -type f -name '*.wav' -print0 |xargs -0 -P 3 -n 1 flac -V8 will encode all .wav files into FLAC in parallel. Explanation of xargs flags: -P [max-procs]: Max number of invocations to run at once. Set to 0 to run all at once [potentially dangerous re: excessive RAM usage]. -n [max-args]: Max number of arguments from the list to send to each invocation. -0: Stdin is a null-terminated list. I use xargs to build parallel-processing frameworks into my scripts like the one here: http://pastebin.com/1GvcifYa

Access to specific man page section
You can view the man pages from section five by passing the section number as an argument to the man command

Perl Command Line Interpreter
Can also just use the debug mode like this.

Copy ssh keys to user@host to enable password-less ssh logins.
Alternative for machines without ssh-copy-id

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