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Top Forums Shell Programming and Scripting Displaying current date time of EDT in IST time Post 302781371 by Don Cragun on Saturday 16th of March 2013 10:17:20 AM
Old 03-16-2013
Quote:
Originally Posted by chidori
wow..!! , i did not know that shell has the ability to treat first one as variable assignment and next one it expands into a command. Thats a new thing i learnt today. Thank you
Both are variable assignments, but since they are at the beginning of a command (not complete commands on their own), the settings only affect affect the environment of the command being run. They do not affect the current shell execution environment. For example:
Code:
$ TZ=PST8PDT
$ date;TZ=IST-5:30 date;date
Sat Mar 16 07:13:53 PDT 2013
Sat Mar 16 19:43:53 IST 2013
Sat Mar 16 07:13:53 PDT 2013
$ echo $TZ
PST8PDT
$

 

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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)
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