Korn Shell Programming by Example

eval

Official Description

The arguments are read as input to the shell, and the resulting command(s) is executed.

Syntax

eval [ arg ... ]

Options

None

Oddities

Evaluates arguments, forms a command, and executes the command.

Example

$ search=num
$ num=17
$ eval print /'$'$search/ | ed – buzz  # $search evals to num, $num evals to 17
integer x=17
$
$ unset num
$ eval print /'$'$search/ | ed - buzz
?
$