Update usage text

Also renames get_help() to usage() and add -h,--help switch to the
output.

1 files changed, 21 insertions, 15 deletions

diff --git a/src/main.c b/src/main.c
index 8ab9f48..9640ed8 100644
--- a/src/main.c
+++ b/src/main.c
@@ -23,19 +23,25 @@
 /**
  * Prints the helptext
  */
-void get_help() {
-  printf("Please specify a timeout threshold (in days) as well as a command\n"
-  "or commands to be run if the threshold is exceeded.\n\n"
-  "Example:\n"
-  "  terminus 5 '<command to execute>'\n\n"
-  "This example will execute the given command if the user has not\n"
-  "logged in in the last 5 days."
-  "\n\n"
-  "If terminus detects that the login threshold has been exceeded, it will\n"
-  "not reset the last login. If however the threshold was exceeded but the\n"
-  "user is fine, the lastlogin file can be reset using the -r or the\n"
-  "--reset flags\n\n"
-  );
+void usage() {
+  printf(
+"Terminus is a program to trigger another program or script if the\n"
+"configured passive activity threshold is exceeded. For example, if a user\n"
+"does not log in to their system more recently than the configured duration,\n"
+"then the configured program or script is executed by terminus on the next\n"
+"login.\n"
+"\n"
+"Terminus is intended for use within the shell's profile/rc file so it is\n"
+"called every time a new shell is loaded, which will update the lastlogin\n"
+"timestamp as the user uses the system.\n"
+"\n"
+"Usage:\n"
+"  terminus <days> <command to execute>\n"
+"\n"
+"Options:\n"
+"  -h,--help    Print this help text\n"
+"  -r,--reset   Reset last login timestamp to current time\n"
+);
 }
 
 
@@ -157,7 +163,7 @@ int main(int argc, char* argv[]) {
   time_t lastlogin;
 
   if(argc == 1) {
-    get_help();
+    usage();
     return 1;
   }
 
@@ -181,7 +187,7 @@ int main(int argc, char* argv[]) {
       return 0;
     } else if(strcmp("-h", argv[i]) == 0 || strcmp("--help", argv[i]) == 0) {
       // The user requested the help text
-      get_help();
+      usage();
       return 0;
     }
   }