Bourne Shell (/bin/sh) counting?
Brad Appleton
brad at SSD.CSD.HARRIS.COM
Wed Mar 21 01:14:49 AEST 1990
In article <22788 at adm.BRL.MIL> rbottin at atl.calstate.edu (Richard John Botting) writes:
>Jeff <postnews at cvbnetprime.com> Asks
>> What is the best way to provide a loop counter in a Bourne
>> shell script? An example script is below, all it needs is
>> the count incrementer.
>
>> #!/bin/sh
>> count=0
>[...]
>> # <increment count here>
>> echo count=$count
> ...
>
> [ points out significant details in using 'expr' ]
> ...
>I'd like to see a neat solution (other than a "increment.c" program).
This is the easiest one yet (using the original example):
#!/bin/sh
count=0
for i in 1 2 3 4 5 6 7 ; do
count=$i
done
Has the same effect as incrementing count (and is "plainer" too).
Or better yet:
#!/bin/sh
count=7
I guess what Im really asking is:
Why did the asker of the original question need to do the
incrementing if the for loop was already incrementing a variable
for him? I think if we knew this we could all provide some assistance
in helping him find the "nicest" way to do it.
+-=-=-=-=-=-= "... and miles to go before I sleep." -=-=-=-=-=-=-=-=-+
| Brad Appleton | Harris Corporation |
| brad at ssd.csd.harris.com | Computer Systems Division |
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