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Top Forums Shell Programming and Scripting help with a 'while read' loop to change the names of files Post 302171956 by starsky on Saturday 1st of March 2008 10:10:43 AM
Old 03-01-2008
help with a 'while read' loop to change the names of files

Hi,

I am new to scripting, so any help on this would be much appreciated.

I am trying to rename a bunch of files, taking the names sequentially from a list read in another file...

# ls oldnames
file_1
file_2
file_3

# cat names
red
yellow
green


I want the files to take on the names red yellow green as they are read line by line from the file "names"
ie
cp oldnames/file_1 newnames/red
cp oldnames/file_2 newnames/yellow
cp oldnames/file_3 newnames/green
etc....

What I have tried (but doesn't work) -

#! /bin/bash
ls . |while read line
do
echo $line
cat names | while read xx
do
cp $line ../newnames/$xx
done

done

This creates new files but only copies the last entry from the ls to each of them Smilie

As you can see my scripting skills are not great - any ideas would be much appreciated.
 

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MESSAGES(3)						  libbash messages Library Manual					       MESSAGES(3)

NAME
messages -- libbash library that implements a set of functions to print standard status messages SYNOPSIS
printOK [indent] printFAIL [indent] printNA [indent] printATTN [indent] printWAIT [indent] DESCRIPTION
General messages is a collection of functions to print standard status messages - those [ OK ] and [FAIL] messages you see during Linux boot process. The function list: printOK Prints a standard [ OK ] message (green) printFAIL Prints a standard [FAIL] message (red) printNA Prints a standard [ N/A] message (yellow) printATTN Prints a standard [ATTN] message (yellow) printWAIT Prints a standard [WAIT] message (yellow) Detailed interface description follows. indent Column to move to before printing. Default indent is calculated as TTY_WIDTH-10. If current tty width can not be determined (for example, in case of serial console), it defaults to 80, so default indent is 80-10=10 FUNCTIONS DESCRIPTIONS
printOK [indent] Prints a standard [ OK ] message (green) printFAIL [indent] Prints a standard [FAIL] message (red) printNA [indent] Prints a standard [ N/A] message (yellow) printATTN [indent] Prints a standard [ATTN] message (yellow) printWAIT [indent] Prints a standard [WAIT] message (yellow) EXAMPLES
Run a program named MyProg, and report it's success or failure: echo -n 'Running MyProg...' printWAIT if MyProg ; then printOK else printFAIL fi AUTHORS
Hai Zaar <haizaar@haizaar.com> Gil Ran <gil@ran4.net> SEE ALSO
ldbash(1), libbash(1) Linux Epoch Linux
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