Commands by bwoodacre (6)

  • If the pdf/dvi/etc documentation for a latex package is already part of your local texmf tree, then texdoc will find and display it for you. If the documentation is not available on your system, it will bring up the package's webpage at CTAN to help you investigate. Show Sample Output


    2
    texdoc packagename
    bwoodacre · 2010-05-23 20:02:32 0
  • ncdu is a text-mode ncurses-based disk usage analyzer. Useful for when you want to see where all your space is going. For a single flat directory it isn't more elaborate than an du|sort or some such thing, but this analyzes all directories below the one you specify so space consumed by files inside subdirectories is taken into account. This way you get the full picture. Features: file deletion, file size or size on disk and refresh as contents change. Homepage: http://dev.yorhel.nl/ncdu Show Sample Output


    5
    ncdu directory_name
    bwoodacre · 2009-06-09 00:02:48 3
  • txt2regex can be interactive or noninteractive and generates regular expressions for a variety of dialects based on user input. In interactive mode, the regex string builds as you select menu options. The sample output here is from noninteractive mode, try running it standalone and see for yourself. It's written in bash and is available as the 'txt2regex' package at least under debian/ubuntu. Show Sample Output


    8
    txt2regex
    bwoodacre · 2009-04-29 04:00:22 4
  • 'dpkg -S' just matches the string you supply it, so just using 'ls' as an argument matches any file from any package that has 'ls' anywhere in the filename. So usually it's a good idea to use an absolute path. You can see in the second example that 12 thousand files that are known to dpkg match the bare string 'ls'. Show Sample Output


    45
    dpkg -S /usr/bin/ls
    bwoodacre · 2009-04-18 18:18:23 11
  • This command sequence allows simple setup of (gasp!) password-less SSH logins. Be careful, as if you already have an SSH keypair in your ~/.ssh directory on the local machine, there is a possibility ssh-keygen may overwrite them. ssh-copy-id copies the public key to the remote host and appends it to the remote account's ~/.ssh/authorized_keys file. When trying ssh, if you used no passphrase for your key, the remote shell appears soon after invoking ssh [email protected]


    20
    ssh-keygen; ssh-copy-id [email protected]; ssh [email protected]
    bwoodacre · 2009-03-18 07:59:33 3
  • This invokes tar on the remote machine and pipes the resulting tarfile over the network using ssh and is saved on the local machine. This is useful for making a one-off backup of a directory tree with zero storage overhead on the source. Variations on this include using compression on the source by using 'tar cfvp' or compression at the destination via ssh [email protected] "cd dir; tar cfp - *" | gzip - > file.tar.gz


    6
    ssh [email protected] "cd targetdir; tar cfp - *" | dd of=file.tar
    bwoodacre · 2009-03-18 07:43:22 3

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Killing processes with your mouse in an infinite loop
Useful for quickly cleaning your Desktop. Nice joke if launched at startup.

list files recursively by size

Virtual Console lock program
vlock command locks the current console by default. Also you can lock all the consoles on the server by using -a parameter. For details, pl man vlock. ps: Generally speaking , system will not install vlock programme . So you should use ' $ sudo apt-get install vlock ' to install vlock .

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)

Erase a word
hit BACKSPACE more than once to delete more words

Get length of current playlist in xmms2

Find common lines between two files

Display which distro is installed
Works on nearly all linux distros

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"

Check availability of Websites based on HTTP_CODE


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