command-runner.sample

#!/bin/sh
: <<'=cut'

=head1 NAME

command-runner.sample - example script for use with tabbedex tab-arguments

=head1 SYNOPSIS

command-runner.sample I<id> I<command> [ I<arguments> ... ]

=head1 DESCRIPTION

Runs a predefined commands identified by I<id> or I<command> if I<id> doesn't
match any.  Predefined commands are hard-coded in the source code of this
script.

=head1 OPTIONS

=over

=item I<id>

Identifier of a predefined command to run.  Typically a zero-indexed integer.

=item I<command> [ I<arguments> ... ]

Command to execute if I<id> does not match any know predefined command.

=back

=head1 TABBEDEX

The script is designed to work with tabbedex urxvt plugin (and showcase its
I<tab-arguments> configuration resource).  It can be used to execute different
commands in different tabs.  To use it, copy it and edit list of commands at the
end of the file.  Provided urxvt-tabbedex is installed in B</usr/lib/urxvt>, the
following steps are a good start:

    mkdir -p ~/.urxvt
    cp /usr/lib/urxvt/tabbedex-command-runner.sample \
       ~/.urxvt/command-runner.sh
    ${VISUAL:-${EDITOR:-/bin/vi}} ~/.urxvt/command-runner.sh

Finally, configure B<tab-arguments> resource, for example:

    URxvt.tabbedex.tab-arguments: \
        -e /bin/sh %~/.urxvt/command-runner.sh %n %E

With this done, each time new tab is started, this script will be run so that it
can decide what actual command is executed in the tab.

To use this script in conjunction with B<pgid-cd.pl> tool also packaged with
urxvt-tabbedex, the resource should be:

    URxvt.tabbedex.tab-arguments: \
        -e /usr/lib/urxvt/tabbedex-pgid-cd %p \
        /bin/sh %~/.urxvt/command-runner.sh %n %e

(modulo the actual location of the files).

=head1 SEE ALSO

L<tabbedex(1)> and L<tabbedex-pgid-cd(1)>

=cut

trap 'echo "Press RETURN to continue." >&2 && read && exit 1' 0
if [ $# -lt 2 ]; then
	echo "usage: /bin/sh ${0##*/} <id> <command> [ <args> ... ]" >&2
	exit 1
fi

id=$1
shift

set_tab_name() {
	printf '\033]777;tabbedex;set_tab_name;%s\007' "$1"
}

#### Predefined commands ####

case $id in
0) # First tab is shell
	set_tab_name sh
	exec "${SHELL:-bash}"
	;;
1) # Second tab is Emacs
	set_tab_name ed
	exec emacs -nw
	;;
2) # In third, let’s tail /var/log/syslog
	set_tab_name log
	exec tail -f /var/log/syslog
	;;
*) # If nothing matches, run whatever was given as an argument
	exec "$@"
esac