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Top Forums Shell Programming and Scripting Assigning command to a variable Post 302342811 by makodarear on Monday 10th of August 2009 09:58:55 PM
Old 08-10-2009
Assigning command to a variable

I've been searching these forums for a while, but this is my first actual post, so please bear with me Smilie

I'm writing a short script using ksh and am trying to store a command and parameters in a variable. My intention is to issue the command by calling the variable. The command will contain double quotes. My problem is that for some reason there's no output.

Here's a simplified view of what I'm trying to accomplish (find command is used just as an example of the problem):

Code:
#!/usr/bin/ksh
cmd="find . -name \"55*\""
echo $cmd
$cmd

The only output is what I echo'ed:
Code:
# ./problem.sh
find . -name "55*"

If I issue the same command outside of the script, I get the desired result:
Code:
# find . -name "55*"
./55_messages.txt

Is is possible to store a command+parameters in a variable and run the command through the variable?

Thanks,
Hubert
 

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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 variable assignment. This means that tilde substitution is performed after the = sign and word splitting and file name genera- tion 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 5.11 15 Apr 1994 times(1)
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