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can i exectue a command stored in a variable.it goes like this

 
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Top Forums UNIX for Dummies Questions & Answers can i exectue a command stored in a variable.it goes like this
# 1  
Old 11-01-2007
can i exectue a command stored in a variable.it goes like this
hi

the code i ve written is as follows:
command="egrep ',100,|,200,' | wc -l"
count =`cat trial.txt | $command`
echo "$count"
the contents of
trial.txt is :
000,100,200,300,
001,200,100,201,
002,200,100,400,


i need to get the count using the command stored in a variable and using it to get the count.
Can someone help me with this?Smilie
# 2  
Old 11-01-2007
what file are you searching with egrep?
# 3  
Old 11-01-2007
cat trial.txt | egrep ',100,|,200,' | wc -l| more
3
try an alias

alias command="egrep ',100,|,200,' | wc -l"

cat trial.txt |command |more
3
 
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