variable assignment in new shell


 
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Top Forums Shell Programming and Scripting variable assignment in new shell
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Old 09-03-2005
Here is a pretty good thread if you are interestsed in he syntax of here documents and how the shell treats things in a here doc: https://www.unix.com/shell-programming-and-scripting/20818-giving-input-script-through-script-post80897.html#post80897

However, I always recommend reading the shells' documentation. Chet Ramey and co have a really instructive bash reference manual, from which you will learn all sorts of intracacies about both bash and all Bourne-shell derivatives: http://cnswww.cns.cwru.edu/~chet/bash/bashref.html
Read it closely, several times, and come back to it whenever you need. It is muc more readable than man pages for in-depth understadning. If documents bash clearly, but sometimes the functionality of other sheels differ. But I found that after reading this, I could easilly understand the man pages of other shells and understand how those shells differ.
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times(1)							   User Commands							  times(1)

NAME
times - shell built-in function to report time usages of the current shell SYNOPSIS
sh times ksh times DESCRIPTION
sh Print the accumulated user and system times for processes run from the shell. ksh Print the accumulated user and system times for the shell and for processes run from the shell. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
ksh(1), sh(1), time(1), attributes(5) SunOS 5.10 15 Apr 1994 times(1)