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How to implement a command n times?

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# 1  
Old 05-23-2011
How to implement a command n times?
I need to run a command n (n >= 100) times and the command running may take about 30 seconds. Can anyone help me with the shell script to achieve this? Thanks in advance.
# 2  
Old 05-23-2011
Try:

Code:
for ((i=0;i<$n;i++))
do
command
done

# 3  
Old 05-23-2011
Thanks for reply! But the problem is the command here is a C++ executable file which takes about 30 seconds to run so before the current command running completes the next running should not start. Thanks!
# 4  
Old 05-23-2011
Did you give it a try? The shell won't continue the loop (and thus start the command again) until the previous run did end, unless you explicitly tell it to run the command in the background.
# 5  
Old 05-23-2011
something like

Code:
#!/usr/bin/ksh
i=0
while [ $i -lt 100 ]
do
    let i+=1
    yourcommand &
    wait $!
done

# 6  
Old 05-23-2011
We are confused here. You want multiple instances to run parallel or in sequential ?
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