How do I escape a "$" in the input stream


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How do I escape a "$" in the input stream

by Anonymous Monk

on Sep 10, 2002 at 09:04 UTC ( [id://196587]=perlquestion: print w/replies, xml )

Need Help??

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hi

I am a new user here and this is my first posting. I am writing a snippet of code to read an input string from command line. Here is the snippet I use :

$text=$ARGV[0];
print "$text\n";
[download]

This reads the value of ARGV[0] into a variable and prints it. If I give it an input of "This is $200", the print out is
"This is 00"

I understand that this happens because perl interprets $2 like a (reg-ex) variable rather than a dollar value (money). Printing $text with a single quote will not interpolate the $text variable.

How can I read a line from input stream with a dollar in it??
Any help is appreciated.
Thanks

Comment on How do I escape a "$" in the input stream Download Code

Replies are listed 'Best First'.
Re: How do I escape a "$" in the input stream by projekt21 (Friar) on Sep 10, 2002 at 09:19 UTC
It's your shell, not perl. Try: `> echo "This is $200" This is 00 > echo "This is \$200" This is $200 > echo 'This is $200' This is $200` [download] So use a backslash or single quotes, not doubles. alex pleiner <alex@zeitform.de> zeitform Internet Dienste	[reply] [d/l]
Re: How do I escape a "$" in the input stream by blm (Hermit) on Sep 10, 2002 at 09:15 UTC
It looks like the $ sign and the first character are taken by the shell (eg bash) to be a shell variable therefore the $ sign and the first character are not getting into ARGV at all. Try running it with `./program.pl \$200` or `./program.pl "$200"`	[reply] [d/l] [select]

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