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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Comparison between the execution output of the last and penultimate command
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Rename a file with a random name
Give files a random name (don't ask why :-) The function will rename files but maintain their extensions. BUG: If a file doesn't have an extension it will end up with a dot at the end of the name. The parameter '8' for pwgen controls the length of filenames - eight random characters.

Poor man's unsort (randomize lines)

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Number of connections to domains on a cPanel server

Perl One Liner to Generate a Random IP Address

Check if variable is a number

Show IP Address in prompt --> PS1 var
when working with many machines in a computer lab need to know the IP addr is very large, this is a simplistic solution to make things easier

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

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