Preserving Blanks in Parameters to Shell Script

[Shlomi Fish]

On Monday 14 Jun 2010 15:27:43 Aharon Schkolnik wrote:
> Hi.
> 
> I want to write a script which will nice ffmpeg whatever parameters it is
> given - ie:
> 
> #!/bin/sh
> 
> nice ffmpeg $*
> 
> #
> 
> 
> However, what if I have a file named `file one'
> 
> 
> I would like to type `myscript -i file\ one output.whatever`
> 
> I do not want to change what I type - the script needs to be a drop-in
> replacement for the ffmpeg command.
> 
> 
> Is there any way to do make the script preserve the backslashed space ?
> 

Yes, use quotes:

[shell] # Untested
#!/bin/sh
nice ffmpeg "$@"
[/shell]

"$@" when in quotes causes it to be something like "$1" "$2" "$3" "$4" , and 
so forth up to the number of quotes.

The whitespace-in-shell-variables-handling is part of a general code/markup 
injection problem:

* http://community.livejournal.com/shlomif_tech/35301.html

* http://community.livejournal.com/shlomif_tech/14671.html

Regards,

	Shlomi Fish

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