Get the host from where you logged in

who -m | sed 's/.*(\(.*\)).*/\1/'
Will print the host associated with the current stdin. This is useful to set the DOIT_SERVER for the doit remote execution agent ( ) export DOIT_HOST=$(who -m | sed 's/.*(\(.*\)).*/\1/') Note that SSH_CLIENT variable can be lost if you use su or sudo (if set to reset vars)
Sample Output

By: keymon
2011-09-22 10:28:30

These Might Interest You

  • host -i `echo $SSH_CLIENT | cut -f 1 -d \ ` | sed 's/.* domain name pointer \(.*\)\./\1/' to reverse lookup and get the hostname.

    echo $SSH_CLIENT | cut -f 1 -d ' '
    infinull · 2011-01-11 10:20:45 1
  • IMPORTANT: You need Windows PowerShell to run this command - in your Windows Command Prompt, type powershell Uses sajb to start a PowerShell background job that pings an IP host every 10 seconds. Any changes in the host's Up/Down state is time-stamped and logged to a file. Date/time stamps are logged in two formats: Unix and human-readable. A while(1) loop repeats the test every 10 seconds by using the sleep command. See the Sample Output for more detail. I use this command to log Up/Down events of my Motorola SB6141 cable modem ( To end the logging, close the PowerShell window or use the "exit" command. Show Sample Output

    sajb {$ip="";$old=0;while(1){$up=test-connection -quiet -count 1 $ip;if($up-ne$old){$s=(date -u %s).split('.')[0]+' '+(date -f s).replace('T',' ')+' '+$ip+' '+$(if($up){'Up'}else{'Down'});echo $s|out-file -a $home\ping.txt;$old=$up}sleep 10}}
    omap7777 · 2015-12-28 20:33:08 0
  • Even faster without the need for cut... :)

    echo ${SSH_CLIENT%% *}
    bashrc · 2011-01-11 10:58:35 2

  • 1
    last | awk '{ print $1 }' | sort | uniq -c | grep -v wtmp
    mnikhil · 2009-02-07 18:42:59 1

What Others Think

Correct the web link in your command description, it includes the ending parenthesis and brings you to a 404 page.
ztank1013 · 351 weeks and 4 days ago
@bashrc: It is not duplicated. You could read the description at least: "Note that SSH_CLIENT variable can be lost if you use su or sudo (if set to reset vars)"
keymon · 350 weeks ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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