gsmsmsstore --version (return code: 0)
gsmsmsstore: version 1.10 [compiled Aug 15 2015]
gsmsmsstore --help (return code: 0)
gsmsmsstore: [-a][-b baudrate][-c][-C sca][-d device or file]
[-h][-I init string][-k][-l][-s device or file][-t SMS store name]
[-v][-V][-x][-X]{indices}|[phonenumber text]
-a, --add add new SMS submit message
(phonenumber and text) to destination
-b, --baudrate baudrate to use for device (default: 38400)
-c, --copy copy source entries to destination
(if indices are given, copy only these entries)
-C, --sca SMS service centre address
-d, --destination sets the destination device to
connect to, or the file to write to
-h, --help prints this message
-I, --init device AT init sequence
-k, --backup backup new entries to destination
(if indices are given, copy only these entries)
-l, --list list source to stdout
-s, --source sets the source device to connect to,
or the file to read
-t, --store name of SMS store to use
-v, --version prints version and exits
-V, --verbose print detailed progress messages
-x, --delete delete entries denoted by indices
-X, --xonxoff switch on software handshake