Commands by quitaiskiluisf (7)

  • Copy file to a Windows/Samba share without mounting it

    This commando copies the file (which must reside in the current directory) to //<server>/<share-name>/<subdirectory>/<file> through the CIFS protocol (Samba share or Windows Share). It doesn't require you to mount the filesystem first. --directory "<subdirectory>" may be omitted in order to copy the file the the root of the share. The "%password" part may also be omitted. If doing so, smbclient will ask for the password interactively. To copy a file from a Windows/Samba share, change "put" for "get". smbclient --user=user%password --directory "&lt;subdirectory&gt;" --command "get &lt;file&gt;" //&lt;server&gt;/&lt;share-name&gt; Show Sample Output


    2
    smbclient --user=user%password --directory "<subdirectory>" --command "put <file>" //<server>/<share-name>
    quitaiskiluisf · 2018-05-12 19:18:42 0
  • List wireless clients connected to an access point

    When the wireless card is in AP mode, list the users which are connected to the network. It uses the new nl80211 based CLI configuration utility for wireless devices. It can be used, for example, in a dd-wrt based router through a telnet session to obtain client information. Show Sample Output


    0
    iw dev ath0 station dump
    quitaiskiluisf · 2017-01-09 00:50:49 1
  • Pushing changes to an empty git repository for the first time

    After cloning an empty repository on the client ("git clone" just after "git init", for instance), "git push" fails. In order to be able to push to this repository for the first time, you need to run the above command. It will link your local "master" branch to the "master" branch in the origin server, and push the changes. This is only necessary only for the first push; after that, you can use just the commands "git push" or "git pull" in order to do this operations. Show Sample Output


    -1
    git push --set-upstream origin master
    quitaiskiluisf · 2017-01-09 00:32:14 0
  • List wireless clients connected to an access point

    When the wireless card is in AP mode, list the users which are connected to the network. Show Sample Output


    0
    wlanconfig <wireless_device> list sta
    quitaiskiluisf · 2013-06-08 13:46:51 2
  • Disconnect a wireless client on an atheros-based access point

    This command will disconnect the user whose mac was specified from the current list of clients from the wireless network when the network card is working in access point mode. Works on atheros-based access points which use the madwifi driver (not sure, but don't think it will work on access points which are not atheros-based, as it uses the atheros's iwpriv extensions). It will not prevent the user from reconnecting to the network, but may force the user to roam to another AP, with stronger signal. Show Sample Output


    1
    iwpriv ath<x> kickmac <macaddress>
    quitaiskiluisf · 2013-06-08 13:41:24 0
  • Compress and store the image of a disk over the network

    Create an image of "device" and send it to another machine through the network ("target" and "port" sets the ip and port the stream will be sent to), outputting a progress bar On the machine that will receive, compress and store the file, use: nc -l -p <port> | 7z a <filename> -si -m0=lzma2 -mx=9 -ms=on Optionally, add the -v4g switch at the end of the line in order to split the file every 4 gigabytes (or set another size: accepted suffixes are k, m and g). The file will be compressed using 7z format, lzma2 algorithm, with maximum compression level and solid file activated. The compression stage will be executed on the machine which will store the image. It was planned this way because the processor on that machine was faster, and being on a gigabit network, transfering the uncompressed image wasn't much of a problem.


    8
    dd if=<device> | pv | nc <target> <port>
    quitaiskiluisf · 2012-01-27 18:37:36 2
  • Extracting the audio part of a track as a wav file


    0
    mplayer -vc null -vo null -ao pcm <filename>
    quitaiskiluisf · 2011-09-11 04:03:02 0

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Fetch the current human population of Earth
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delete duplicate lines from a file and keep the order of the other lines
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Get the current svn branch/tag (Good for PS1/PROMPT_COMMAND cases)
uses just one sed

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Calculate the date of Sysadmin day (last Friday of July) of any given year

Recursive find and replace file extension / suffix (mass rename files)
Find recursively all files in ~/Notes with the extension '.md' and pipe that via xargs to rename command, which will replace every '.md' to '.txt' in this example (existing files will not be overwritten).

FizzBuzz One-liner

List all active access_logs for currently running Apache or Lighttpd process
Ever logged into a *nix box and needed to know which webserver is running and where all the current access_log files are? Run this one liner to find out. Works for Apache or Lighttpd as long as CustomLog name is somewhat standard. HINT: works great as input into for loop, like this: $ for i in `lsof -p $(netstat -ltpn|awk '$4 ~ /:80$/ {print substr($7,1,index($7,"/")-1)}')| awk '$9 ~ /access.log$/ {print $9| "sort -u"}'` ; do echo $i; done Very useful for triage on unfamiliar servers!

VIM: when Ctrl-D and Ctrl-U only scroll one line, reset to default
Resets the scroll parameter to the default (half the rows in the current window). The scroll parameter can be inadvertently set to 1, e..g., if you type '1 Ctrl-D' or '1 Ctrl-U' in normal mode.

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"

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