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Full Discussion: BASH: Sort four lines based on first line
Top Forums Shell Programming and Scripting BASH: Sort four lines based on first line Post 302556412 by agama on Sunday 18th of September 2011 11:59:11 AM
Old 09-18-2011
I completely missed that the send, was being placed on its own line in the output!! Initially I was using spaces to separate the fields and realised that there were embedded spaces and when I converted to pipes I added an unnecessary vertical bar. The 'source' file should be something like:

Code:
;Canyon|::grand::|Send, Canyon|Exit|
;Elevator|::lift::|Send, Elevator|Exit|
;Office|::9to5::|Send, Office|Exit|
;Cabin|::log::|Send, Cabin|Exit|
;Desert|::sahara::|Send, Desert|Exit|
;Front door|::welcome::|Send, Front door|Exit|

Where the vertical bar after Send, is removed.

I generated the first set of output using the above input and this command:

Code:
sort input-source | awk -v RS="|" '1'

To run with your current file, this should work:

Code:
awk 'NF < 1 {next;} { x=x $0 "|"; } /Exit/ { print x; x="" }' input-file | sort  | awk -v RS="|" '1'

I just recut/pasted your sample data (to be sure I hadn't buggered something up along the way) and ran it through the above pipeline; it generated:

Code:
;Cabin
::log::
Send, Cabin
Exit

;Canyon
::grand::
Send, Canyon
Exit

;Desert
::sahara::
Send, Desert
Exit

;Elevator
::lift::
Send, Elevator
Exit

;Front door
::welcome::
Send, Front door
Exit

;Office
::9to5::
Send, Office
Exit

I did add a final Exit -- I hope that there is one, otherwise things might not work quite right.

Hope this helps.
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LEARN ABOUT REDHAT

pidof

PIDOF(8)						Linux System Administrator's Manual						  PIDOF(8)

NAME

       pidof -- find the process ID of a running program.

SYNOPSIS

       pidof [-s] [-x] [-o omitpid] [-o omitpid..]  program [program..]

DESCRIPTION

       Pidof  finds  the  process  id's (pids) of the named programs. It prints those id's on the standard output. This program is on some systems
       used in run-level change scripts, especially when the system has a System-V like rc structure. In that case these scripts  are  located	in
       /etc/rc?.d, where ? is the runlevel. If the system has a start-stop-daemon (8) program that should be used instead.

OPTIONS

       -s     Single shot - this instructs the program to only return one pid.

       -x     Scripts too - this causes the program to also return process id's of shells running the named scripts.

       -o     Tells  pidof  to omit processes with that process id. The special pid %PPID can be used to name the parent process of the pidof pro-
	      gram, in other words the calling shell or shell script.

NOTES

       pidof is simply a (symbolic) link to the killall5 program, which should also be located in /sbin.

       When pidof is invoked with a full pathname to the program it should find the pid of, it is reasonably safe. Otherwise it is  possible  that
       it returns pids of running programs that happen to have the same name as the program you're after but are actually other programs.

SEE ALSO

       shutdown(8), init(8), halt(8), reboot(8)

AUTHOR

       Miquel van Smoorenburg, miquels@cistron.nl

								    01 Sep 1998 							  PIDOF(8)
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