Commands by darkfader (5)

  • List OSX applications and versions.

    Uses find, plutil and xpath. Note: Some applications don't have proper information. system_profiler might be better to use. It's a bit slow query. Due to command length limit, I removed -name "*.app" and CFBundleName. Show Sample Output


    -1
    find /Applications -type d -maxdepth 1 -exec sh -c 'echo "{}"; (plutil -convert xml1 -o - "{}/Contents/Info.plist" | xpath /dev/stdin "concat(\"v\", /plist/dict/string[preceding-sibling::key[1]=\"CFBundleShortVersionString\"]/node())" 2>/dev/null)' \;
    darkfader · 2013-03-29 14:01:23 4
  • bookmarklet for commandlinefu.com search

    If you add the bookmarklet to your browser's bookmarks with like say, the keyword 'cfu', you can for example type 'cfu hello' in the location bar and the %s gets replaced with 'hello'. The bookmarklet will convert the search text to base64 for use with the commandlinefu website and will take you there. Tested with Firefox. Show Sample Output


    -2
    echo "javascript:location.href='http://www.commandlinefu.com/commands/matching/'+encodeURIComponent('%s')+'/'+btoa('%s')+'/sort-by-votes'"
    darkfader · 2011-03-07 22:01:46 4
  • sshdo, an alternative to sudo

    Run program as root by SSH key forwarding instead of sudoers. Put this alias line in .bashrc or wherever you like. Alias arguments might need extra escaping. You might wonder about security. But you'd block out root login as much as possible of course. In sshd_config you put this: PermitRootLogin no Match Address 127.0.0.1   PermitRootLogin without-password


    -2
    alias sshdo='ssh -q -t root@localhost -- cd $PWD \&\& sudo'
    darkfader · 2010-10-20 22:33:22 8
  • aptbackup restore

    Use when aptbackup will not start or you just want to see what's going on. Show Sample Output


    1
    for p in `grep -v deinstall /var/mobile/Library/Preferences/aptbackup_dpkg-packages.txt | cut --fields=1`; do apt-get -y --force-yes install $p; done
    darkfader · 2010-10-11 22:41:55 7
  • Change SSH RSA passphrase

    Protects your secret identity with a passphrase. OSX 10.6 automatically does key forwarding and can store the passphrase in the keychain. For other OSes, use ssh -A or set ForwardAgent in ssh_config to enable forwarding. Then use ssh-agent/ssh-add. Show Sample Output


    3
    ssh-keygen -f ~/.ssh/id_rsa -p
    darkfader · 2010-07-19 12:53:35 4

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ShellCheck all the bash/sh script under a specific directory excluding version control
This is a commodity one-liner that uses ShellCheck to assure some quality on bash and sh scripts under a specific directory. It ignores the files in .git directory. Just substitute "./.git/*" with "./.svn/*" for older and booring centralized version control. Just substitute ShellCheck with "rm" if your scripts are crap and you want to get rid of them :)

Get Nyan'd
Get nyan'd

Get the current svn branch/tag (Good for PS1/PROMPT_COMMAND cases)
Get the svn info, grep for the "URL" of the repository, pull out the tag/branch/trunk, and then just show the helpful/meaningful bit.

grep -v with multiple patterns.
That's what the sed command should've been, sorry.

Make a playlistfile for mpg321 or other CLI player
A short variant if you have only one directory whit only audio files in it.

Mount file system using back-up superblock
Found on http://www.cyberciti.biz/faq/linux-find-alternative-superblocks/

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

macOS: Save disk space by moving apps to external drives
Because Mac app bundles contain everything in one place, it makes running them from anywhere, including from a device such as a USB flash drive or external HDD, possible. So if your Mac has a mere 256GB of storage (as mine does), you can free up large quantities of disk space by storing apps like, say, Xcode on external devices.

Map the slot of an I/O card to its PCI bus address
Recent hardware may or may not enumerate *both of* these values

tar the current directory wihtout the absolute path
tars the current directory (and its children) in an archive of the same name (plus ".tar" :)) in the parent directory without the absolute path, so that when the archive is extracted, only the current directory name is created for the path. Assumes bash/zsh.

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