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Undefined variable in mv script

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Top Forums Shell Programming and Scripting Undefined variable in mv script
# 1  
Old 09-27-2010
Lightbulb Undefined variable in mv script
Hello,

Code:
#this script renames schematic file for model year change
 
#my = model year prefix
my="lsd"
for i in 'ls lsb*'
do
old=$i
new='echo $i | cut - c4 - c30'
mv $i $my$new
end

i: Undefined variable

What am I missing or doing wrong?
Last edited by Neo; 09-27-2010 at 05:04 PM.. Reason: code tags
# 2  
Old 09-27-2010
The shell cannot expand the * symbol inside ' ', also lose the ls....
Code:
#change
for i in 'ls lsb*'
# to
for i in lsb*

# 3  
Old 09-27-2010
I think the last bit should be 'done', not 'end'.

And "for file in `ls *`" is a useless use of backticks, you can just do "for file in *" and it'll do the same thing without ls.
This User Gave Thanks to Corona688 For This Post:
dtrescott
# 4  
Old 09-27-2010
Also, for starters:

Code:
my="lsd"

Code:
for i in 'ls lsb*'

Is this right??
This User Gave Thanks to Neo For This Post:
dtrescott
# 5  
Old 09-27-2010
Hi.

The error looks C-Shell-like.

If I run this in C-Shell I get lots more errors:

Code:
my=lsd: Command not found.
for: Command not found.
do: Command not found.
i: Undefined variable.

The syntax - although not correct - looks more bourne shell. What shell is it supposed to be run in?
This User Gave Thanks to Scott For This Post:
dtrescott
# 6  
Old 09-27-2010
Try this

Code:
#this script renames schematic file for model year change

#my = model year prefix
my="lsd"
for i in `ls lsb*`
do
  old=$i
  new=`echo $i | cut -c4 -c30`
done
mv $i $my$new
end

This User Gave Thanks to jville For This Post:
dtrescott
# 7  
Old 09-27-2010
variable readibility
The full format of the CAD file is cs(ModelYearIdentifier)yyy-70030-123456. So, engineers use a baseline design and make modifications. I have to be my own admin in this regard. Cp and mkdir all go well.

I want to replace the ModelYearIdentifier in the filename. I'm told SED and Perl are over kill for the task at hand. The ModelYearIdentifier is always the 3 character following the 3 types of CAD files.

So, with the posts below, I will try the following;

Code:
for i in lsb*
  code block
done



---------- Post updated at 03:47 PM ---------- Previous update was at 03:20 PM ----------

% is my prompt = C shell on SunOS 5.8.

Code:
finger -m user name
/bin/csh

I still get the i : Undefined Variable.

Moderator's Comments:
Mod Comment Learn to use code tags...... or else, LOL Smilie
Last edited by Neo; 09-27-2010 at 05:28 PM.. Reason: code tags are fun :)
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