Re^3: sh: -c: line 1: syntax error near unexpected token `|'

Probably better to place quotes around the command, for example:

$cmd = "'------------- Hello World ------------'";
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or use somthing like q()

Also, you might like to use "end of options":

my $result = `echo -- $cmd | grep -- '\-\-\-\-'`;
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Re^4: sh: -c: line 1: syntax error near unexpected token `\|' by Anonymous Monk on May 10, 2012 at 13:54 UTC
Regarding quotes, the OP might find a module that provides shell escaping useful. Such as String::ShellQuote. printf is probably more surefire than echo there: `printf "%s" "$cmd" \| grep -e '----'` But shelling out is very error-prone (as the OP discovered) and pretty vain when the code can be reproduced in Perl in a few lines.	[reply] [d/l]