a pipe within a variable


 
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# 1  
Old 01-28-2011
a pipe within a variable

Hi,

I am trying to run this command:


Code:
ED_CMD="$Access_OPS $ED_Logs_Dir/access | $lgrep -v $Access_Err"
$lgrep $ED_CMD

However, i am getting an error "Failed to open |: Broken pipe at "

My question is how to put a pipe within a variable.

Thanks. John.
# 2  
Old 01-28-2011
Need parse command line twice, so use eval
Code:
eval commandline

shell parse 1st io-redirection, pipes, ...
and after that expand variables.
# 3  
Old 01-28-2011
You mean like this :

Code:
ED_CMD="$Access_OPS $ED_Logs_Dir/access | $lgrep -v $Access_Err"
$lgrep eval $ED_CMD

# 4  
Old 01-28-2011
No.
eval commandline
eval $lgrep $ED_CMD
This User Gave Thanks to kshji For This Post:
# 5  
Old 01-28-2011
Yes. That's work.
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