This library provides a quasiquoter for executing shell commands, somewhat similar to Perl's backtick operator. Shell commands are IO actions, and they capture the command's standard output as a String result. You can use Haskell variables in a shell command. A string representation of the contents will be interpolated. The shell will see each interpolated variable as a single token without interpreting special characters, unless you choose otherwise. Note: The shell escaping is not correct for the Windows shell. This library should fail to build on Windows, as well. Examples of using this library are included in examples/.