This procedure creates an input port by invoking popen() with the specified command (a string). The created input port is closed by garbage collection is no longer referenced (by calling pclose()) or may be closed explicitely (using close-input-port or close). Reading from a closed input port results in an error.
The created input port is returned.
> (popen-read "echo 1234") #<input-port> > (read (popen-read "echo 12345")) 12345 > (read (popen-read "notfound")) sh: notfound: command not found #<end-of-file> > (define port (popen-read "echo 12345")) port > (close-input-port port) ok > (read port) ERROR! message : cannot read from port irritant : #<primitive-procedure internal-read> expression: infunction continue : possible, continue with value as value from primitive Error (? for help) >>