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Full Discussion: Confusion about IFS Variable
Top Forums Shell Programming and Scripting Confusion about IFS Variable Post 302172831 by Perderabo on Tuesday 4th of March 2008 08:16:47 PM
Old 03-04-2008
A script like:
#! /bin/sh
echo hello | read word ; echo word = $word
will work on HP-UX but fail on Linux. HP's /bin/sh is a modified version of the real Korn shell. But Linux's /bin/sh is a linked version of bash. The real Korn shell is the only shell that executes the last command of a pipeline in the context of the current shell provided that the last command is a shell built-in. Other shells will fork a new process to handle that "read word". The subprocess will exit and back in the parent, the variable "word" never got a new value. Beware: Linux often has pd-ksh which will behave the same way.
 

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LEARN ABOUT DEBIAN

ql-set-cmd-timeout

ql-set-cmd-timeout(8)					       System Administration					     ql-set-cmd-timeout(8)

NAME

       ql-set-cmd-timeout - set the timeout on the devices connected to the QLogic FC HBA.

SYNOPSIS

       ql-set-cmd-timeout [OPTIONS]

DESCRIPTION

       QLogic Linux Set Device Timeout Utility

       This  utility allows you to set the timeout on the devices connected to the QLogic FC HBA.  This timeout value applies to the commands sent
       to the device. This can help when target devices take longer to execute a command, for example under heavy I/O. Setting	a  longer  timeout
       reduces the chance of the Linux SCSI mid-layer driver aborting the tasks after a timeout.

	      [DEFAULT]

	      Display timeout of devices connected to all HOSTs

	      [HOST]

	      Display timeout of devices connected to HOST

	      [HOST] [TARGET]

	      Display timeout of devices connected to a TARGET on HOST

	      [HOST] [TARGET] [TIMEOUT]

	      To set timeout on devices connected to a TARGET on HOST

       -h,  --help, ?
	      Prints this help message

       -i,  --interactive
	      Use this option to use the menu driven program

SEE ALSO

       ql-dynamic-tgt-lun-disc(8), ql-lun-state-online(8), ql-hba-snapshot(8)

Matthias Schmitz <;matthias@sigxcpu.org> 			    August 2008 					     ql-set-cmd-timeout(8)
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