07-04-2010
Question about reading and parsing text file
Hello,
I'm just getting started with BASH programming. I would like to write a script to solve a file renaming problem I have. I received a directory containing a collection (>2000) of files whose names are in DOS 8.3 format, and woild like to rename the filenames to a longer and more descriptive text names. The directory also contains a text file that serves as a translation "table of contents" for these files. The text file consists of a list of entries, one per line, listing each file by its filename in 8.3 format followed by the longer descriptive text:
<DOS 8.3 filename 1> <File descriptive name 1>
<DOS 8.3 filename 2> <File descriptive name 2>
<DOS 8.3 filename 3> <File descriptive name 3>
....
My question is: Does anyone have a script that can read the contents of this text file, parse it, and use the parsed fields to rename the other filenames in the directory from the DOS 8.3 name to the descriptive text name?
Many thanks,
Paul
Last edited by polomora; 07-04-2010 at 03:56 PM..
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LEARN ABOUT DEBIAN
unix2dos
unix2dos(1) User Commands unix2dos(1)
NAME
unix2dos - convert text file from ISO format to DOS format
SYNOPSIS
unix2dos [-ascii] [-iso] [-7] [-437 | -850 | -860 | -863 | -865] originalfile convertedfile
DESCRIPTION
The unix2dos utility converts ISO standard characters to the corresponding characters in the DOS extended character set.
This command may be invoked from either DOS or SunOS. However, the filenames must conform to the conventions of the environment in which
the command is invoked.
If the original file and the converted file are the same, unix2dos will rewrite the original file after converting it.
OPTIONS
The following options are supported:
-ascii Adds carriage returns and converts end of file characters in SunOS format text files to conform to DOS requirements.
-iso This is the default. Converts ISO standard characters to the corresponding character in the DOS extended character set.
-7 Converts 8 bit SunOS characters to 7 bit DOS characters.
On non-i386 systems, unix2dos will attempt to obtain the keyboard type to determine which code page to use. Otherwise, the default is US.
The user may override the code page with one of the following options:
-437 Use US code page
-850 Use multilingual code page
-860 Use Portuguese code page
-863 Use French Canadian code page
-865 Use Danish code page
OPERANDS
The following operands are required:
originalfile The original file in ISO format that is being converted to DOS format.
convertedfile The new file in DOS format that has been converted from the original ISO file format.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWesu |
+-----------------------------+-----------------------------+
SEE ALSO
dos2unix(1), ls(1), attributes(5)
DIAGNOSTICS
File filename not found, or no read permission
The input file you specified does not exist, or you do not have read permission. Check with the SunOS command, ls -l (see ls(1)).
Bad output filename filename, or no write permission
The output file you specified is either invalid, or you do not have write permission for that file or the directory that contains it.
Check also that the drive or diskette is not write-protected.
Error while writing to temporary file
An error occurred while converting your file, possibly because there is not enough space on the current drive. Check the amount of
space on the current drive using the DIR command. Also be certain that the default diskette or drive is write-enabled (not write-pro-
tected). Notice that when this error occurs, the original file remains intact.
Translated tmpfile name = filename.
Could not rename tmpfile to filename.
The program could not perform the final step in converting your file. Your converted file is stored under the name indicated on the
second line of this message.
SunOS 5.10 14 Sep 2000 unix2dos(1)