- readpipe EXPR
EXPR is executed as a system command. The collected standard output of the command is returned. In scalar context, it comes back as a single (potentially multi-line) string. In list context, returns a list of lines (however you've defined lines with $/ (or
$INPUT_RECORD_SEPARATORin English)). This is the internal function implementing the
qx/EXPR/operator, but you can use it directly. The
qx/EXPR/operator is discussed in more detail in I/O Operators in perlop. If EXPR is omitted, uses $_ .