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Mass Copy/rename

 
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# 1  
Old 11-01-2005
Data Mass Copy/rename
Don't tell me DOS can do something UNIX can't do! I want to copy a number of files from one directory to another, and at the same time change the names. The name changes would be common, e.g., all files starting with the letter 'L' and ending in '30.NEW554', with the copied or new files also starting with 'L' but ending with just the '30', while preserving whatever characters were in the file names between the 'L' and the '30'. Do I need to do single cp statements for each file? Yipes!
# 2  
Old 11-01-2005
With ksh....
Code:
$ ls -la
total 2
drwx------    2 foo       bar     1024 Nov  2 08:21 .
drwx------    6 foo       bar     1024 Nov  2 08:21 ..
-rw-------    1 foo       bar          0 Nov  2 08:21 Lbar30.NEW554
-rw-------    1 foo       bar          0 Nov  2 08:21 Lblah30.NEW554
-rw-------    1 foo       bar          0 Nov  2 08:21 Lfoo30.NEW554
$ pwd
/some/dir/tmp
$ ls | while read file; do
>   cp "${file}" ../newtmp/`echo "${file%.*}"`
> done
$ ls -l ../newtmp
total 0
-rw-------    1 foo       bar          0 Nov  2 08:24 Lbar30
-rw-------    1 foo       bar          0 Nov  2 08:24 Lblah30
-rw-------    1 foo       bar          0 Nov  2 08:24 Lfoo30

EDIT: Follow up:
If you have pax installed on your system...
Code:
$ ls -l
total 0
-rw-------    1 foo       bar          0 Nov  2 08:21 Lbar30.NEW554
-rw-------    1 foo       bar          0 Nov  2 08:21 Lblah30.NEW554
-rw-------    1 foo       bar          0 Nov  2 08:21 Lfoo30.NEW554
$ mkdir ../dest
$ pax -r -w -s /\.NEW.*$//g *.NEW* ../dest
$ ls -l ../dest
total 0
-rw-------    1 foo       bar          0 Nov  2 08:21 Lbar30
-rw-------    1 foo       bar          0 Nov  2 08:21 Lblah30
-rw-------    1 foo       bar          0 Nov  2 08:21 Lfoo30

Cheers
ZB
Last edited by zazzybob; 11-01-2005 at 05:40 PM..
# 3  
Old 11-01-2005
Bug You da man
ZazzyBob, that little script worked like a charm! Just gorgeous! Saved me beaucoup time!
Take the rest of the day off with my thanks!

LWilson Smilie
# 4  
Old 11-03-2005
thanks
-------------------------------------------------------------------
$ pwd
/some/dir/tmp
$ ls | while read file; do
> cp "${file}" ../newtmp/`echo "${file%.*}"`
> done
$ ls -l ../newtmp
total 0
-rw------- 1 foo bar 0 Nov 2 08:24 Lbar30
-rw------- 1 foo bar 0 Nov 2 08:24 Lblah30
-rw------- 1 foo bar 0 Nov 2 08:24 Lfoo30
-------------------------------------------------------------------

ZB...
Can u explain this statement....>`echo "${file%.*}"`....How the extension of the files are left out.....
Is it possible to create the new file names as substring of the source files...

example: the new file like
bar instead of Lbar30
bla instead of Lblah30
foo instead of Lfoo30
....ie substring(old_file,2,3) (--oracle syntex)

Thanks lot...

Chandroo
# 5  
Old 11-03-2005
I'm not clear on the echo myself. You can always change something like
x="something"
into
x=`echo something`
and a lot of people like the second form. As for your substring question, my solution:

Code:
#! /usr/bin/ksh

typeset -L3 newname
echo "Lbar30
Lblah30
Lfoo30" | while read name ; do
        newname=${name#?}
        echo $name becomes $newname
done
exit 0

# 6  
Old 11-03-2005
Yep, the echo is certainly superfluous. I like to include it with variable substitutions like this to highlight that some action is taking place. Just personal preference I suppose.

Cheers
ZB
# 7  
Old 11-03-2005
Good ... can any one suggesst me any links, where i can get good stuff about "echo" statement

Thanks .....
 
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