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Full Discussion: How 2 run same command across all open terminals
Top Forums Shell Programming and Scripting How 2 run same command across all open terminals Post 302520966 by agama on Monday 9th of May 2011 10:45:32 PM
Old 05-09-2011
To my knowledge you'll have to manually source the rc file in each running instance of the shell.

If you want to be clever, and anticipate doing this often enough, you could put the following command into your .bashrc file:

Code:
trap ". $HOME/.bashrc" 16

Once that is set in a running instance of bash, you then only need to send a SIGUSR1 (16) to the process and it will resource the .bashrc file. You could write a small script that susses out all of your running login/interactive shells and executes the necessary kill -16 command. You could pick another signal, but this seems just fine for this case.

Hope this helps some.
Last edited by agama; 05-09-2011 at 11:46 PM.. Reason: typo
These 2 Users Gave Thanks to agama For This Post:
mirni rbatte1
 

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LEARN ABOUT PLAN9

securetty

SECURETTY(5)						     Linux Programmer's Manual						      SECURETTY(5)

NAME

       securetty - file which lists terminals from which root can log in

DESCRIPTION

       The file /etc/securetty contains the names of terminals (one per line, without leading /dev/) which are considered secure for the transmis-
       sion of certain authentication tokens.

       It is used by (some versions of) login(1) to restrict the terminals on which root is allowed to login.  See login.defs(5) if  you  use  the
       shadow suite.

       On  PAM	enabled  systems,  it  is  used  for  the  same purpose by pam_securetty(8) to restrict the terminals on which empty passwords are
       accepted.

FILES

       /etc/securetty

SEE ALSO

       login(1), login.defs(5), pam_securetty(8)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2015-03-29							      SECURETTY(5)
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