topic Re: shell string manipulation in Operating System - HP-UX

shell string manipulation

Ricardo_78 — Thu, 18 Aug 2005 12:39:45 GMT

Hi, does anyone know how to make this work in hp-ux:

#!/bin/sh
.
.
.
line=...
data=${line:0:10}

i'm getting this error:
./script: data=${line:0:10}: bad substitution

but in linux works... does anyone knows an equivalent to hp-ux?

Re: shell string manipulation

Alan Meyer_4 — Thu, 18 Aug 2005 12:41:58 GMT

data=`echo $line |cut -c1-10`

Re: shell string manipulation

RAC_1 — Thu, 18 Aug 2005 12:42:45 GMT

How does line look like and what you want to extract from it??

Re: shell string manipulation

Mel Burslan — Thu, 18 Aug 2005 12:42:51 GMT

data=`echo $line|cut -c1-10`

Re: shell string manipulation

Alan Meyer_4 — Thu, 18 Aug 2005 12:43:08 GMT

sorry
data=`echo $line |cut -c1-11`

Re: shell string manipulation

Marvin Strong — Thu, 18 Aug 2005 12:51:33 GMT

if you prefer an awk solution.

echo $line | awk '{print substr($0,0,10)}'

Re: shell string manipulation

curt larson_1 — Thu, 18 Aug 2005 14:10:29 GMT

parameter substitution with an offset isn't implemented in hp-ux's usual shells, /usr/bin/sh and /usr/bin/ksh. This has been implemented starting with ksh93 (so much for a modern programming environment). this syntax maybe implemented in the dtksh shell, /usr/dt/bin/dtksh. otherwise you'll just have to use a shell that does implement it.

but one way to get the first 10 characters would be to do something like this:

typeset -L10 tmp10

tmp10=$line
data=$tmp10

Re: shell string manipulation

Sandman! — Thu, 18 Aug 2005 15:52:53 GMT

What's stored in line and what string manipulation are you trying on data? Appending a string or extracting a substring from it or other?? Please elaborate on what you are trying to get at.

regards!