Commands tagged share (6)

  • If you enable multiuser, then you can permit others to share your screen session. The following conditions apply: 1. screen must be suid root; 2. "multiuser on" must be configured in ~/.screenrc; 3. control the others user(s) access with "aclchg": # ----- from ~/.screenrc-users ----- aclchg someuser +rx "#?" #enable r/o access to "someuser" aclchg someuser -x "#,at,aclchg,acladd,acldel,quit" # don't allow these aclchg otheruser +rwx "#?" # enable r/w access to "otheruser" aclchg otheruser -x "#,at,aclchg,acladd,acldel,quit" # don't allow them to use these commands # ----- After doing this (once), you start your session with: $ screen Then, the other user can join your terminal session(s) with youruserid: $ screen -r youruserid/ Note: the trailing "/" is required. Multiple users can share the same screen simultaneously, each with independent access controlled precisely with "aclchg" in the ~/.screenrc file. I use the following setup: # ~/.screenrc-base # default screenrc on any host source $HOME/.screenrc-base source $HOME/.screenrc-$HOST source $HOME/.screenrc-users # ----- Then, the base configurations are in ~/.screenrc-base; the host-specific configurations are in ~/.screenrc-$HOST, and the user configurations are in ~/.screenrc-users. The host-specific .screenrc file might contain some host-specific screen commands; e.g.: # ~/.screen-myhost # ----- screen -t 'anywhere' /bin/tcsh screen -t 'anywhere1' /bin/tcsh # ---- The .screenrc-base contains: # ~/.screenrc-base ## I find typing ^a (Control-a) awkward. So I set the escape key to CTRL-j instead of a. escape ^Jj termcapinfo xterm* ti@:te@: autodetach on zombie kr verbose on multiuser on


    38
    % screen -r someuser/
    totoro · 2009-03-25 23:59:38 1
  • One person does `mkfifo foo; script -f foo' and another can supervise real-time what is being done using `cat foo'.


    19
    mkfifo foo; script -f foo
    realist · 2011-09-08 02:51:44 5
  • Sprunge.us is a code/text sharing site like pastebin, but it is easy to post stuff from the command line. How it works: :w !command In vim, w writes the current tab to a file when a filename is given afterwards, but if !command is given, the output is piped to the stdin of command. curl -F "sprunge=<-" http://sprunge.us curl is an HTTP client. The -F option does an HTTP post to the given address. The data in the quotes is passed in the post. The "sprunge=" part sets up a fieldname - the part that follows is what is associated with the name. The "<" tells curl to send data from the file descriptor that follows it. The "-" in bash is a file descriptor that points to stdin instead of an actual file; in this case, stdin is being piped in from vim. After we send the HTTP post to sprunge.us, it will give back a url that points to the data you just sent. | xclip xclip is a utility that lets you put stuff in your clipboard or selection buffer. This part uses a bash pipe ( | ) to redirect the stdout of the previous command to the stdin of the next command. So, we're capturing the URL that curl gave us and putting it into the selection buffer, ready to paste into IRC or a forum. Notes: Of course, for this to work, you must have curl (which comes by default on most distroes), and xclip installed. When you share the url, you can append "?lang" to highlight and have line numbers. Check out http://sprunge.us/BZXV?log for line numbers and http://sprunge.us/BZXV?ruby for highlighting. If you prefer to use ctrl-v (paste from clipboard) instead of middle-click (paste from selection buffer), look up options on xclip - you can do that. Show Sample Output


    17
    :w !curl -F "sprunge=<-" http://sprunge.us | xclip
    shawnjgoff · 2010-04-25 00:43:37 3
  • Here's how to serve a directory in one line of Ruby. Handy for sharing files at a conference, for example.


    1
    ruby -rwebrick -e'WEBrick::HTTPServer.new(:Port => 3000, :DocumentRoot => Dir.pwd).start'
    boylah · 2013-08-20 10:19:27 0

  • 0
    smbmount //<ip>/<resource> <local_mount_point>
    ivanatora · 2010-02-26 11:11:02 0
  • After installing Termbeamer (see termbeamer.com) you can use it to share a terminal session with one or more others even from behind a firewall or NAT.


    -1
    tb send xmpp:user.name@gmail.com
    unixmonkey52862 · 2013-04-08 00:29:43 0

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create screencast (record text and audio simultaneously) using 'script' and 'arecord'
This shell function takes a single argument, which is used as the base name of the .wav, .timing and .session files created. To create a screencast: $ screencast test type and talk ... then type 'exit' or to exit the screencast. test.wav will contain the audio from your screencast. test.session will contain text and control characters needed to paint the screen test.timing will contain timing information needed to synch individual keystrokes in test.session with the audio. to play back: $ aplay test.wav & scriptreplay test.{timing,session} NOTE: because the shell function uses the variable "$!", and bash likes to expand '!' during history expansion, you will need to turn off bash's history before you enter the shell function. This can be achieved using the command $set +H

Get AWS temporary credentials ready to export based on a MFA virtual appliance
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

For Gentoo users : helping with USE / emerge
This command puts all the flags of the USE variable actually used by the packages you emerged to the file "use", and those which are unused but available to the file "notuse"

Clean swap area after using a memory hogging application
When you run a memory intensive application (VirtualBox, large java application, etc) swap area is used as soon as memory becomes insufficient. After you close the program, the data in swap is not put back on memory and that decreases the responsiveness. Swapoff disables the swap area and forces system to put swap data be placed in memory. Since running without a swap area might be detrimental, swapon should be used to activate swap again. Both swapoff and swapon require root privileges.

Run a command when a file is changed

Install pip with Proxy
Installs pip packages defining a proxy

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"

Install pip with Proxy
Installs pip packages defining a proxy

Recursive grep of all c++ source under the current directory
I like this better than some of the alternatives using -exec, because if I want to change the string, it's right there at the end of the command line. That means less editing effort and more time to drink coffee.

Redefine the cd command's behavior
Often, the very next command after the cd command is 'ls', so why not combine them?. Tested on a Red Hat derivative and Mac OS X Leopard Update: changed ${1:-$HOME} to "${@:-$HOME}" to accomodate directories with spaces in the names


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