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 0
  • 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 0
  • 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 5
  • 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 2
  • 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 0

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cycle through a 256 colour palette
Rainbow, instead of greys

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"

Recursively Find Images, Convert to JPEGS and Delete
Simple command to convert a large number of images into jpeg-format. Will delete originals after conversion.

Replace all backward slashes with forward slashes
Use -i to edit file directly: sed -i 's|\\|\/|g' file

What is my ip?

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"

Kill most recently created process.
Kills the most recently created firefox process.

Check if a string is into a variable
Returns true (0) if the string is into $var, or false (1) if not.

sort ugly text
Often, when sorting you want the sort to ignore extraneous characters. The b, d, and f tell sort to ignore leading blanks, use 'dictionary order' (ignore punctuation), and ignore (fold) case. Add a "u" if you only want one copy of duplicate lines. This is a great command to use within vim to sort lines of text, using !}sort -bdf

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

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