Commands using as (7)

  • Tested on Fedora 12. This function will take a man page and convert it to pdf, saving the output to the current working directory. In Gnome, you can then view the output with "gnome-open file.pdf", or your favorite pdf viewer.


    15
    function man2pdf(){ man -t ${1:?Specify man as arg} | ps2pdf -dCompatibility=1.3 - - > ${1}.pdf; }
    SuperFly · 2009-11-27 12:49:49 4
  • Simply pass an argument to the script to convert the manual page to a PDF: man2pdf drutil


    4
    function man2pdf(){ man -t ${1:?Specify man as arg} | open -f -a preview; }
    piXelz · 2009-02-16 18:29:35 7
  • Just give it an artist and/or song at the end of the command as shown. Show Sample Output


    4
    python2 -c 'import urllib2 as u, sys as s, json as j, subprocess as p;p.call(["mplayer", u.urlopen(j.loads(u.urlopen("http://ex.fm/api/v3/song/search/%s" % "+".join(s.argv[1:])).read())["songs"][0]["url"]).geturl().split("#")[0]])' lenny kravitz fly away
    nagev · 2013-09-21 02:25:51 0
  • ZenCart uses a MD5 with a salt to secure its passwords. If you need to forcibly change someone's password to a known value within the database, this one-liner can generate the password. Change the value of 'p' to the password you want. Show Sample Output


    1
    python -c 'p="SeCuR3PwD";import hashlib as h;s=h.md5(p).hexdigest()[:2];pw=h.md5(s+p).hexdigest();print pw+":"+s;'
    Xiol · 2011-10-16 18:49:08 1
  • This also works with Safari if you just change the application name. Replace window 1 with windows to list the URLs of tabs in all windows instead of only the frontmost window. This also includes titles: osascript -e{'set o to""','tell app"google chrome"','repeat with t in tabs of window 1','set o to o&url of t&"\n"&" "&title of t&"\n"',end,end}|sed \$d .


    1
    osascript -e{'set text item delimiters to linefeed','tell app"google chrome"to url of tabs of window 1 as text'}
    lri · 2019-01-22 06:05:55 0
  • Creates a consistent datapumpt export on an Oracle database with the current sequence number, while the system is running and changes happens on the database.


    0
    expdp user/password FLASHBACK_SCN=$(echo -e "select current_scn from v\$database;" | sqlplus / as sysdba 2>/dev/null| grep [0-9][0-9][0-9][0-9][0-9][0-9]*)
    peshay · 2009-10-01 08:55:20 0
  • # Usage: ftagmarks TAG BOOKMARKS.JSON ftagmarks Bash ~/.mozilla/firefox/*.default/bookmarkbackups/bookmarks-*.json Tag can be partial matching, e.g. input 'Bas' or 'ash' will match 'Bash' tag. # Exact tag matching: ftagmark(){ jq -r --arg t "$1" '.children[] as $i|if $i.root == "tagsFolder" then ([$i.children[] as $j|{title: ($j.title), urls: [$j.children[].uri]}]) else empty end|.[] as $k|if $k.title == $t then $k.urls else empty end|.[]?' "$2"; } Usage: ftagmark TAG BOOKMARKS.JSON # List all tags: ftagmarkl(){ jq -r '.children[] as $i | if $i.root == "tagsFolder" then $i.children[].title else empty end' "$1"; } Usage: ftagmarkl BOOKMARKS.JSON # Requires: `jq` - must have CLI JSON processor http://stedolan.github.io/jq Show Sample Output


    0
    ftagmarks(){ jq -r --arg t "$1" '.children[] as $i|if $i.root == "tagsFolder" then ([$i.children[] as $j|{title: ($j.title), urls: [$j.children[].uri]}]) else empty end|.[] as $k|if ($k.title|contains($t)) then $k.urls else empty end|.[]?' "$2"; }
    qwertyroot · 2016-12-24 15:12:04 0

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands


Check These Out

Save a file you edited in vim without the needed permissions
probably just like 1204, but uses tee as a filter (+ I actually understand how this one works)

ThePirateBay.org torrent search
This one-liner greps first 30 direct URLs for .torrent files matching your search querry, ordered by number of seeds (descending; determined by the second number after your querry, in this case 7; for other options just check the site via your favorite web-browser). You don't have to care about grepping the torrent names as well, because they are already included in the .torrent URL (except for spaces and some other characters replaced by underscores, but still human-readable). Be sure to have some http://isup.me/ macro handy (someone often kicks the ethernet cables out of their servers ;) ). I've also coded a more user-friendly ash (should be BASH compatible) script, which also lists the total size of download and number of seeds/peers (available at http://saironiq.blogspot.com/2011/04/my-shell-scripts-4-thepiratebayorg.html - may need some tweaking, as it was written for a router running OpenWrt and transmission). Happy downloading!

a function to create a box of '=' characters around a given string.
First argument: string to put a box around. Second argument: character to use for box (default is '=') Same as command #4962, cleaned up, shortened, and more efficient. Now a ' * ' can be used as the box character, and the variables get unset so they don't mess with anything else you might have. They marked c++ as a function for this command, but I'm not sure why. Must be a bug.

Print info about your real user.
To get your effective user: whoami

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"

Test a serial connection
If the connection works you should see a "hello" on host A. If not: check your cabeling etc :-)

convert single digit to double digits
Uses 'rename' to pad zeros in front of first existing number in each filename. The "--" is not required, but it will prevent errors on filenames which start with "-". You can change the "2d" to any number you want, equaling the total numeric output: aka, 4d = ????, 8d = ????????, etc. I setup a handful of handy functions to this effect (because I couldn't figure out how to insert a var for the value) in the form of 'padnum?', such as: padnum5 () { /usr/bin/rename 's/\d+/sprintf("%05d",$&)/e' -- $@ } Which would change a file "foo-1.txt" to "foo-00001.txt"

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

list files recursively by size

Clone all repos from a user with lynx
https://wuseman.github.io/wcloner/


Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: