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Top Forums Shell Programming and Scripting cp files containing \ from a script Post 302239112 by Keith Daniels on Tuesday 23rd of September 2008 01:07:16 AM
Old 09-23-2008
Results of testing the two suggestions presented

This is the results of testing the two suggestions presented so far.

(I hope this is not a double post. I posted this earlier but it never appeared in the forum...)

As long as the exact block is entered into the script, all of the methods below will copy the old file (with the backslash) to the new file.

NONE of them will work when the oldname variable is read from the directory or passed from the "for loop" -- even when oldname is EXACTLY the same as any of the text assigned to oldname variables below.



oldname=junk\\junk.txt
newname=junkjunk.txt
cp $oldname $newname

The the above works WITHOUT quotes OR with
double quotes ONLY, on either or both variables


oldname="junk\junk.txt"
newname=junkjunk.txt
cp ${oldname/\/\\} $newname

oldname="junk\junk.txt"
newname=junkjunk.txt
cp $oldname $newname

In the TWO examples above, oldname MUST be quoted, with single OR double quotes,
AND newname MAY or MAY NOT be quoted with single OR double quotes.

-----------

Does this make any sense to anyone. I can not see how the bash shell could distinguish between a variable created inside the script, from data inside the script AND a variable created inside the script from identical text passed in from outside the script.


The only thing I can think of is that I am reading in the filenames to the variable through a pipe and that starts a sub-process which might fold, spindle or mutilate the variable in some manner that causes this problem.

I am leaving the country for a week in about 36 hours. If I have time I will rework the script to where the file list is imported without using a pipe and see if that changes how the variables react.

If anyone has any other ideas I would appreciate hearing them.

Thanks
 

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OSACOMPILE(1)						    BSD General Commands Manual 					     OSACOMPILE(1)

NAME
osacompile -- compile AppleScripts and other OSA language scripts SYNOPSIS
osacompile [-l language] [-e command] [-o name] [-d] [-r type:id] [-t type] [-c creator] [-x] [-s] [-u] [-a arch] [file ...] DESCRIPTION
osacompile compiles the given files, or standard input if none are listed, into a single output script. Files may be plain text or other compiled scripts. The options are as follows: -l language Override the language for any plain text files. Normally, plain text files are compiled as AppleScript. -e command Enter one line of a script. Script commands given via -e are prepended to the normal source, if any. Multiple -e options may be given to build up a multi-line script. Because most scripts use characters that are special to many shell programs (e.g., AppleScript uses single and double quote marks, ``('', ``)'', and ``*''), the command will have to be correctly quoted and escaped to get it past the shell intact. -o name Place the output in the file name. If -o is not specified, the resulting script is placed in the file ``a.scpt''. The value of -o partly determines the output file format; see below. -x Save the resulting script as execute-only. The following options are only relevant when creating a new bundled applet or droplet: -s Stay-open applet. -u Use startup screen. -a arch Create the applet or droplet for the specified target architecture arch. The allowable values are ``ppc'', ``i386'', and ``x86_64''. The default is to create a universal binary. The following options control the packaging of the output file. You should only need them for compatibility with classic Mac OS or for cus- tom file formats. -d Place the resulting script in the data fork of the output file. This is the default. -r type:id Place the resulting script in the resource fork of the output file, in the specified resource. -t type Set the output file type to type, where type is a four-character code. If this option is not specified, the creator code will not be set. -c creator Set the output file creator to creator, where creator is a four-character code. If this option is not specified, the creator code will not be set. If no options are specified, osacompile produces a Mac OS X format script file: data fork only, with no type or creator code. If the -o option is specified and the file does not already exist, osacompile uses the filename extension to determine what type of file to create. If the filename ends with ``.app'', it creates a bundled applet or droplet. If the filename ends with ``.scptd'', it creates a bun- dled compiled script. Otherwise, it creates a flat file with the script data placed according to the values of the -d and -r options. EXAMPLES
To produce a script compatible with classic Mac OS: osacompile -r scpt:128 -t osas -c ToyS example.applescript SEE ALSO
osascript(1), osalang(1) Mac OS X November 12, 2008 Mac OS X
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