Date: Mon, 15 Feb 2010 12:16:00 -0800 From: Nerius Landys <nlandys@gmail.com> To: Christian Weisgerber <naddy@mips.inka.de> Cc: freebsd-questions@freebsd.org Subject: Re: simple (and stupid) shell scripting question Message-ID: <560f92641002151216l6b8e97f4u886ac8e3b86d231e@mail.gmail.com> In-Reply-To: <hlbmrs$1fc8$1@lorvorc.mips.inka.de> References: <560f92641002142207w7eade79fr6a4f40ae5b92f4b9@mail.gmail.com> <hlbmrs$1fc8$1@lorvorc.mips.inka.de>
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>> #!/bin/sh
>>
>> DIRNAME=3D"`dirname \"$0\"`"
>> cd "$DIRNAME"
>> SCRIPTDIR=3D"`pwd`"
>>
>> What if I got rid of extra double quotes? =A0Like this:
>>
>> DIRNAME=3D`dirname \"$0\"`
>> cd "$DIRNAME"
>> SCRIPTDIR=3D`pwd`
>
> That is perfectly fine. =A0Word-splitting and filename expansion are
> not performed for variable assignments. =A0Also immune is the expression
> after "case", so this is always fine:
>
> =A0case $FOO in ...
Since you guys have been so helpful I thought I'd ask one more question.
Let's say I have a script named "te st" (yes, with a space in the filename)=
.
The contents of this script are:
#!/bin/sh
if [ $# -ne 2 ]; then
echo 1>&2 "One argument expected. Example usage:"
echo 1>&2 " `basename \"${0}\"` 64.156.192.169 cheaters"
exit 1
fi
When executed with no arguments, this script would print something like so:
nlandys@daffy<zsh># ./te\ st
One argument expected. Example usage:
te st 64.156.192.169 cheaters
nlandys@daffy<zsh>#
Is there a function, or command line utility, to "escape" a string,
making it suitable to be input on the command line? For example, this
"escape" utility would take a input of "te st" and create an output of
"te\ st". Other things such as quotes and single quotes would be
handled as well.
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