Problem with double quote and string variable

Shell Programming and Scripting
1

Hello,

i have a file output.txt which contains a single line with a list of files with quotes :
"file1.ext" "file2.ext" "file3.ext"

In a shell script, I want to retrieve the line and use it as a variable in a command like :
zip archive.zip $LIST

I cant get it work. When I physically type the command zip archive.zip "file1.ext" "file2.ext" "file3.ext", it works just fine but when I try to use a string variable I get an error.

Is there a proper way to do that?
Thank you !

2

When you type it on the command line, the double quotes are not passed to zip. If you are using a script (show it!) then if it is passing in the quotes so that zip sees them, stop doing that.

If you have control over the thing which generates the output file, make it use a less zany format. See how xargs does it; that's probably a good model for you.

3

open the file and remove the quotes if you have no control over the file format. Then split the fields on the spaces to create a list of files to feed to the zip function.

Post your current code (or just the relevant part) for more help.

4

Here is the part of my script where I need my files list:

LIST=$(tail -1 $FILE)
cvs log -N -r$rev1:$rev2 $LIST > changelog.txt

My file looks like this :

"java/file1.java" "java/file2.java" "java/file3.java" "java/file4.java" "java/file5.java"

It is the output of a xslt processing so I do have control on it. I can generate a file which looks like this, without quotes and my script works perfectly :

java/file1.java java/file2.java java/file3.java java/file4.java java/file5.java

But I wanted to wrap the filenames around quotes in case some of the filenames contain whitespaces.

So maybe I should just work on my xsl stylesheet in order to escape whitespaces in filenames?

5

Or if you have the option, make it one file per line (and worry about file names with newlines in them instead ...).

xargs has an option to use a null (ASCII 0x00) terminator for that particular case. (Nulls and slashes are the only two characters which are disallowed in directory entry names.)

6

if you want to do this job with script, you can try code as follow:

#!/bin/bash

INFILE=output.txt

#replace the double quote with space
LIST=$(sed -e 's/\"/ /g' $INFILE)

zip archive.zip $LIST

exit 0
7

Here is a quick fix for your script

LIST=$(tail -1 $FILE)
cvs log -N -r$rev1:$rev2 $(eval $LIST) > changelog.txt

-Ramesh