Re^2: Switching from backticks to open

Using Text::ParseWords will introduce some incompatibilities.

shellwords parses the text in a manner "similar to most Unix shells". Backticks use the bourne shell, not "most unix shells".
Redirection and other shell instructions are silently treated as arguments instead of resulting in an error.
Environment and special variables won't be interpolated.
Globs won't be expanded.

Update: Added last item.

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Re^3: Switching from backticks to open by repellent (Priest) on Nov 03, 2008 at 17:51 UTC
Yes, with Text::ParseWords, we'll lose all "shell-magic" interpretation. That means no `$SHELL_VARIABLE` expansion, globs/redirection/pipe operators are treated as plain arguments, etc. `shellwords($text)` is merely parsing `$text` into words as-is. Care should be taken to manually expand globs or `$SHELL_VARIABLES` embedded in the literal `$text`. Caution: Beyond the very simple case, it is best to avoid going down the path of recreating shell behavior using `shellwords()`.	[reply] [d/l] [select]

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Re^3: Switching from backticks to open
by repellent (Priest) on Nov 03, 2008 at 17:51 UTC

$SHELL_VARIABLE

shellwords($text)

$text

$SHELL_VARIABLES

$text

Caution:

avoid

recreating shell behavior

shellwords()