Dynamic Arrays in Bash

custangro · 06-19-2009, 12:39 PM

Ok...so I've been searching google and man pages and such for an answer to this...

I mostly work in ksh...so...

What is the equivalent of:

Code:

set -A list $(ls -1)

In bash? It seems like there is no way to "dynamically" setting arrays in bash...

-C

Guttorm · 06-19-2009, 01:10 PM

A=$(ls -1)
but I don't understand what you mean by "dynamically"?
maybe:
A=($(ls -1))

custangro · 06-19-2009, 01:16 PM

Quote:

Originally Posted by Guttorm

A=$(ls -1)
but I don't understand what you mean by "dynamically"?

Cool that works...

Code:

chrish@aardvark:~<10>$ A=$(ls -1 *.rpm)
chrish@aardvark:~<11>$ for i in ${A[*]}
> do
> echo $i
> done
php-5.2.9-1.src.rpm
php-eaccelerator-5.2.9_0.9.5.2-1.src.rpm
php-extras-5.2.9-1.src.rpm

Perfect!

About the "dynamic" thing...it's that I'm not familiar with the terminology.

Before I learned what you taught be above...I used to have to "manually" assign arrays like this...

Code:

rpms[1]=php-5.2.9-1.src.rpm
rpms[2]=php-eaccelerator-5.2.9_0.9.5.2-1.src.rpm
rpms[3]=php-extras-5.2.9-1.src.rpm

for rpm in ${rpms[*]}
do
  echo ${rpm}
done

But I can do this...

Code:

rpms=$(ls -1 *.rpm)

for rpm in ${rpms[*]}
do
  echo ${rpm}
done

Thanks again!

-C

custangro · 06-19-2009, 01:49 PM

Quote:

Originally Posted by Guttorm

A=$(ls -1)
but I don't understand what you mean by "dynamically"?
maybe:
A=($(ls -1))

Another question...

What is...

Code:

set -A files myfile1.txt myfile2.txt myfile3.txt

In bash?

-C

Uncle_Theodore · 06-19-2009, 01:59 PM

Quote:

Originally Posted by custangro

Another question...

What is...

Code:

set -A files myfile1.txt myfile2.txt myfile3.txt

In bash?

-C

An indexed array? That would be

Code:

 files=(myfiles1.txt myfile2.txt myfiles3.txt)

custangro · 06-19-2009, 02:13 PM

Quote:

Originally Posted by Uncle_Theodore

An indexed array? That would be

Code:

 files=(myfiles1.txt myfile2.txt myfiles3.txt)

Perfect!

Thanks!

-C