Re: script to generate names ???

On Aug 3, 8:29 am, Janis <janis_papanag...@xxxxxxxxxxx> wrote:
On 3 Aug., 14:09, Stephane CHAZELAS <this.addr...@xxxxxxxxxx> wrote:





2007-08-03, 11:16(-00), ramesh.thangam...@xxxxxxxxx:
[...]

awk '
BEGIN {
for (i = 1; i <= 10000; i++)
print "test" i
}'
[...]
How abt this one.

#! /bin/sh
i=1

while [ $i -le 10000 ]
do
echo "test$i"
i=`expr $i + 1`
done

That's very bad shell coding practice.

Indeed.

Above, you're calling 3
utilities for each pass in the loop ("[", "echo" and "expr")
instead of only one in total as when using awk.

I think "[" and "echo" are likely built-ins of the shell, so not much
of an issue, but there's also the `...` subprocess to additionally
count on the minus side.

The presence of shell loops is often a good indication of a
poorly written script.

Also the usage of external processes where everything can be done
legible using standard shell features can be an indication.

Why not just printf a $(( )) expression and - if you want to prevent
many calls of touch - pipe the output of the while loop into xargs (as
you suggested upthread).

Janis



--
Stéphane- Hide quoted text -

- Show quoted text -- Hide quoted text -

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I hate to say this in shell script forum, but unless the OP has to do
this more than once, I'd just use Excel with test in col 1 and 1 in
col 2. Highlight col 1 and col 2, click on the bottom right tag and
ctrl-drag the columns down until you get test 10000. Next copy into
notepad to strip non-ascii characters, then into Word to do a search
and replace on the tab that will exist between test and the numbers.

Don't hate me. And remember, I only suggest this if you are in a hurry
and don't plan to do it again. Otherewise, write a script.

Dave

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