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Perl and Linux Shell Scripting: escape @

Posted on 2013-11-13
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Last Modified: 2013-11-17
Using Perl and exec I want to do this to be echoed:
"hello@world"
#!/usr/bin/perl -w
exec "echo  \"hello@world\" "

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Question by:hankknight
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by:gheist
ID: 39645115
print("hello!@#$%^&*()world");
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Expert Comment

by:FishMonger
ID: 39645132
You're missing an escape.
exec "echo  \"hello\@world\" ";

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However, a "hello world" script would simply use the built-in print function rather using exec to go out to the shell.

print q("Hello@World");

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by:hankknight
ID: 39645199
I cannot use print because I am trying to get it to work with curl:
#!/usr/bin/perl -w
exec "curl -kX -u \"nlbdmobz\@sharklasers.com\":password123 GET https://zqzqzqz555.couchappy.com/site/www/zzz/hello.txt";

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by:gheist
gheist earned 1000 total points
ID: 39645225
You should use perl's LWP whose capabilities are on par with caling curl (or aria2 or wget for that matter)
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FishMonger earned 1000 total points
ID: 39645262
Whenever possible, you should try to avoid the "leaning tower escapes" by using the appropriate quoting method such as q() or qq() depending on the need for variable interpolation.

Is the perl script supposed to do anything after executing the curl command?  If so, then you don't want to use the exec function because that will exit the script replacing it with the curl process.  You probably should be looking at using the system function.

You could also look at using LWP::Curl - LWP methods implementation with Curl engine
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