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Top Forums Shell Programming and Scripting How to check parameter variable? Post 74619 by Just Ice on Friday 10th of June 2005 05:37:24 PM
Old 06-10-2005
in ksh ... this is the other form of the one i wrote earlier ...
Code:
if [ $myvar ]    ### this part here tests if the variable is set
then
   do_something
fi

... there are other ways variables are tested and set --- see man ksh --- but i don't think they are what you need based on my interpretation of your question

... also, make sure your $1 is not reset by succeeding lines in your script prior to it being used by the mail code ....
 

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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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