Commands tagged help (6)

  • Start a HTTP server which serves Python docs

    I use this command to start a local Python document server over HTTP port 8888.


    12
    pydoc -p 8888 & gnome-open http://localhost:8888
    haivu · 2010-02-28 07:01:43 2
  • View advanced Sort options, Quick Reference Help Alias

    Once you get into advanced/optimized scripts, functions, or cli usage, you will use the sort command alot. The options are difficult to master/memorize however, and when you use sort commands as much as I do (some examples below), it's useful to have the help available with a simple alias. I love this alias as I never seem to remember all the options for sort, and I use sort like crazy (much better than uniq for example). # Sorts by file permissions find . -maxdepth 1 -printf '%.5m %10M %p\n' | sort -k1 -r -g -bS 20% 00761 drwxrw---x ./tmp 00755 drwxr-xr-x . 00701 drwx-----x ./askapache-m 00644 -rw-r--r-- ./.htaccess # Shows uniq history fast history 1000 | sed 's/^[0-9 ]*//' | sort -fubdS 50% exec bash -lxv export TERM=putty-256color Taken from my http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html Show Sample Output


    3
    alias sorth='sort --help|sed -n "/^ *-[^-]/s/^ *\(-[^ ]* -[^ ]*\) *\(.*\)/\1:\2/p"|column -ts":"'
    AskApache · 2010-06-10 21:30:31 0
  • RTFM function

    Same as the other rtfm's, but using the more correct xdg-open instead of $BROWSER. I can't find a way to open info only if the term exists, so it stays out of my version.


    1
    rtfm() { help $@ || man $@ || xdg-open "http://www.google.com/search?q=$@"; }
    KlfJoat · 2014-04-25 04:17:03 0
  • Search gdb help pages

    Most of you are probably familiar with the "apropos" command for searching man pages. However, did you know there's a similar command inside of gdb? If, for example, you wanted to know all gdb commands that related to threads, you could type "apropos thread". Type "help some_command" to receive more information about a command. Type "help" by itself to see a list of help topics.


    0
    gdb command: apropos <keyword>
    kFiddle · 2009-05-01 23:19:35 0
  • find an installed program for a task


    0
    apropos -a keywords
    lolssl · 2015-09-22 16:42:57 0
  • Display helpful information about builtin commands.

    don't `man bash` Show Sample Output


    -4
    help builtin
    kev · 2011-12-25 04:52:49 2

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Delete all empty lines from a file with vim
If you need to delete lines that may contain space characters (such as tabs or spaces) as well as empty ones, try: $:v/\S/d Just an alternative.

Swap a file or dir with quick resotre
This lets you replace a file or directory and quickly revert if something goes wrong. For example, the current version of a website's files are in public_html. Put a new version of the site in public_html~ and execute the command. The names are swapped. If anything goes wrong, execute it again (up arrow or !!).

list block devices
Shows all block devices in a tree with descruptions of what they are.

Compress excutable files in place.
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them. FYI: You can compress any executable sha-bang scripts as well (py, pl, sh, tcl, etc.).

Lint Git unstaged PHP files
Checks for syntax errors in PHP files modified in current working copy of a Git repository.

Go to directory or creat it and go to
For use in scripts this command is very usefull

Apache memory usage

FizzBuzz One-liner

FizzBuzz in Perl
Just another FizzBuzz in Perl.

Live filter a log file using grep and show x# of lines above and below

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