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Re: Context tutorial

by toro (Beadle)
on Jun 15, 2011 at 14:23 UTC ( #909789=note: print w/ replies, xml ) Need Help??


in reply to Context tutorial

I'm using Ubuntu Linux and double-quotes work for me.

You're right jdporter, I have no idea what I did that made it seem like perl -e " ... " worked in that case.

nodereaper, can you strike this? I guess that is not to form here.

UPDATE: Aha. I found out what I did that worked. It wasn't exactly what was in the instructions and I don't know why it worked. I just learned about say and I've been using it everywhere.

$ perl -E "@now = localtime(); for (@now) { say; }" 21 20 10 15 5 111 3 165 1


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Re^2: Context tutorial
by jdporter (Canon) on Jun 16, 2011 at 12:28 UTC

    That's because you don't know what you're talking about.

      You're right. Don't know what I did before. deleting...

      $ perl -e "$now = localtime(); print $now;" syntax error at -e line 1, near "=" Execution of -e aborted due to compilation errors.

      As explained to me by ikegami and runrig in the chatterbox: perl -e "$now = localtime(); print $now;" and perl -e ' = localtime(); print ;' are equivalent in bash (Ubuntu's default) unless $now is an Environmental variable within the Bash shell.

      In other words if one is doing some Bash scripting and has defined $1 as a variable within that shell-script ... then the way to access that same system (environmental) $1 is to use perl -e " ... $1 ... ".

      Cheers.

        bash does support double quotes, but «\», «"» and «$» (and maybe more) are special in double quotes.

        $ perl -E'my $x = qq{abc\\def}; say $x' abc\def $ perl -E"my \$x = qq{abc\\\\def}; say \$x" abc\def
        On guard perl -le print~~localtime

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