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The search service can find package by either name (apache), provides(webserver), absolute file names (/usr/bin/apache), binaries (gprof) or shared libraries (libXm.so.2) in standard path. It does not support multiple arguments yet...
The System and Arch are optional added filters, for example System could be "redhat", "redhat-7.2", "mandrake" or "gnome", Arch could be "i386" or "src", etc. depending on your system.
Similar in calling convention to IPC::Open3, pipeline() spawns N children, connecting the first child to the FIRST_CHLD_IN handle, the final child to LAST_CHLD_OUT, and each child to a shared standard error handle, CHILDREN_ERR. Each subsequent filter specified causes a new process to be fork()ed. Each process is linked to the last with a file descriptor pair created by pipe(), using dup2() to chain each process' standard input to the last standard output. FEATURES IPC::Pipeline accepts external commands to be executed in the form of ARRAY references containing the command name and each argument, as well as CODE references that are executed within their own processes as well, each as independent parts of a pipeline. ARRAY REFS When a filter is passed in the form of an ARRAY containing an external system command, each such item is executed in its own subprocess in the following manner.
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