On 05/21/13 23:02, Tomoki Sekiyama wrote: > Maybe it also should have an additional check and a message to install > Msitools for the case msiextract isn't exectable.
Right. One POSIX-y way would be command -v msiextract >/dev/null and checking the exit status. http://pubs.opengroup.org/onlinepubs/9699919799/utilities/command.html Alternatively, just go ahead calling it, and if the exit status is 126 or 127, assume it is not (correctly) installed and emit an extra hint afterwards: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_01_01 Laszlo
