Hi all

$pfx="prefix"
$export $pfx
$seq 1 10 | awk '{printf $pfx ; print $1}'

I want the output as
prefix1
prefix2
prefix3
....


but it don't work ,how to solve?
thank you very much
your key9

key9 wrote:
> Hi all
>
Hi!
> $pfx="prefix"
> $export $pfx
> $seq 1 10 | awk '{printf $pfx ; print $1}'
>
> I want the output as
> prefix1
> prefix2
> prefix3
> ...
>
Okay.
>
> but it don't work ,how to solve?
> thank you very much
> your key9
>
>
For instance:

export pfx=prefix

seq 1 10 | awk ' { printf "%s%d\n", $pfx, $1 } '

echo | awk ' { for (i=0; i<10;i++) { printf "%s%d\n", $pfx, i; } }'

HTH,
--
Stephan Grein, <stephan at stephan minus rockt dot de>
https://stephan-rockt.de
GnuPG-Key-ID: 0xF8C275D4
FingerPrint: 5B6F 134A 189B A24D 342B 0961 8D4B 0230 F8C2 75D4

> export pfx=prefix
>
> seq 1 10 | awk ' { printf "%s%d\n", $pfx, $1 } '
>
> echo | awk ' { for (i=0; i<10;i++) { printf "%s%d\n", $pfx, i; } }'
>
no chance :-(
$export pfx=prefix
$
$seq 1 10 | awk ' { printf "%s%d\n", $pfx, $1 } '
11
22
33
44
55
66
77
88
99
1010
$

key9 wrote:
>> export pfx=prefix
>>
>> seq 1 10 | awk ' { printf "%s%d\n", $pfx, $1 } '
>>
>> echo | awk ' { for (i=0; i<10;i++) { printf "%s%d\n", $pfx, i; } }'
>>
> no chance :-(
> $export pfx=prefix
> $
> $seq 1 10 | awk ' { printf "%s%d\n", $pfx, $1 } '
> 11
> 22
> 33
> 44
> 55
> 66
> 77
> 88
> 99
> 1010
> $
>
Oh boy. What shell do you use?
seq 1 10 | awk ' { printf "%s%d\n", "prefix", $1 } '

works _flawless_ on:

stephan@unimatrix ~ $ bash --version
GNU bash, version 3.1.17(1)-release (i686-pc-linux-gnu)
Copyright (C) 2005 Free Software Foundation, Inc.

stephan@unimatrix ~ $ seq 1 10 | awk ' { printf "%s%d\n", "prefix", $1 } '
prefix1
prefix2
prefix3
prefix4
prefix5
prefix6
prefix7
prefix8
prefix9
prefix10

HTH,
--
Stephan Grein, <stephan at stephan minus rockt dot de>
https://stephan-rockt.de
GnuPG-Key-ID: 0xF8C275D4
FingerPrint: 5B6F 134A 189B A24D 342B 0961 8D4B 0230 F8C2 75D4

> Oh boy. What shell do you use?
$bash --version
GNU bash, version 3.1.17(1)-release (i486-pc-linux-gnu)
Copyright (C) 2005 Free Software Foundation, Inc.

key9 wrote:
>> Oh boy. What shell do you use?
> $bash --version
> GNU bash, version 3.1.17(1)-release (i486-pc-linux-gnu)
> Copyright (C) 2005 Free Software Foundation, Inc.
>
>

I see, so what gives you

seq 1 10 | awk ' { printf "%s%d\n", "prefix", $1 } '

?

That's on my side:

stephan@unimatrix ~ $ seq 1 10 | awk ' { printf "%s%d\n", "prefix", $1 } '
prefix1
prefix2
prefix3
prefix4
prefix5
prefix6
prefix7
prefix8
prefix9
prefix10

--
Stephan Grein, <stephan at stephan minus rockt dot de>
https://stephan-rockt.de
GnuPG-Key-ID: 0xF8C275D4
FingerPrint: 5B6F 134A 189B A24D 342B 0961 8D4B 0230 F8C2 75D4

"key9" wrote...
> Hi all
>
> $pfx="prefix"
> $export $pfx
> $seq 1 10 | awk '{printf $pfx ; print $1}'
>
> I want the output as
> prefix1
> prefix2
> prefix3

Do you really need awk?

printf "$pfx%d\n" $(seq 10)

or (if your shell supports it):

printf "$pfx%d\n" {1..10}


And if you really need awk:

seq 10 | awk '$0=p$0' p="$pfx"

or

awk 'BEGIN{for (i=1;i<=10;i++)print "prefix"i}'


Regards
Dimitre

> I see, so what gives you
>
> seq 1 10 | awk ' { printf "%s%d\n", "prefix", $1 } '
>
> ?
>
> That's on my side:
>
> stephan@unimatrix ~ $ seq 1 10 | awk ' { printf "%s%d\n", "prefix", $1 } '
> prefix1
> prefix2
> prefix3
> prefix4
> prefix5
> prefix6
> prefix7
> prefix8
> prefix9
> prefix10

I got that, so far I using
#!/bin/bash
while read line; do
echo $pfx;
echo "${line}";
done

to solve this problem temporarily,instead of awk

I am on google to find out why things goes wrong, may be I turn off some
trait?

btw ,as
"seq 1 10 | awk ' { printf "%s%d\n", "prefix", $1 } '"
works
seq 1 10 | awk '{printf $pfx ; print $1}'
this should also work
becasue they have same output on my machine.