first-line-output-of-system-cmd -- Return the first line of output of command shell execution of CMD.
Synopsis
(first-line-output-of-system-cmd cmd)
Description
Return the first line of output of command shell execution of CMD.
CMD is run synchronously and its output is piped into the return value
of this function, as a string. See also output-of-system-cmd
if you want to read all of the output of CMD.