Shell Programming and Scripting

Hi All,

How I can read on variable with cycle for in bash script e.g.

Code:

#!/bin/bash

VAR1=`command1 sentence list`
 
for i in $(cat $VAR1); 
do   
   VAR2=`command2 $i`
   echo $VAR2
done

So read VAR1 execute command over this and load in VAR2 then print VAR2,



Thanks you,

Moderator's Comments:

Please wrap all code, files, input & output/errors in CODE tags as in the forum rules It makes them easier to read and respects multiple spaces for indenting or fixed width data

This is confusing. You're using both back ticks ` and $(). It's not a problem; however, given some syntax issues with your example, it's not clear. For example, what exactly is command1

Code:

VAR1=`command1 sentence list`

This syntax with backtick implies command1 is executable and sentence and list are parameters. As a result when you do the following

Code:

for i in $(cat $VAR1);

that seems to be fundamentally wrong since you are cat'ing the output of what ever is returned (supposedly a file?) by `command1 sentence list`. In addition the syntax of the for statement is wrong. You don't follow a for statement with a semicolon.

Start with explaining what command1 sentence list produces and what command2 produces.