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Top Forums Shell Programming and Scripting Question about reading and parsing text file Post 302434682 by alister on Sunday 4th of July 2010 04:08:47 PM
Old 07-04-2010
Quote:
Originally Posted by pseudocoder
If the description contains whitespaces, you'll want to try this:
Code:
while read line; do
mv -v "$(echo $line | cut -d' ' -f1)" "$(echo $line | cut -d' ' -f2-)"
done <file_desc

A much simpler and more efficient way of accomplishing the same thing:
Code:
while read f1 f2; do
    mv "$f1" "$f2"
done < file_desc

Both versions assume that filenames do not contain whitespace or backslashes; if either assumption is invalid, the code will break.

Regards,
Alister
This User Gave Thanks to alister For This Post:
 

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line(1) 						      General Commands Manual							   line(1)

NAME
line - Reads one line from standard input SYNOPSIS
line STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: line: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
None DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command within a shell command file to read from your terminal. The line command always writes at least a newline character. NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead. EXIT STATUS
Success. End-of-File. EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log This shell procedure displays the message: Enter comments for the log: It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon) prompt. See the echo command for information about the c escape sequence. SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p) Functions: read(2) Standards: standards(5) line(1)
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