mbop: switch for-all-users -t to -j option

Be in line with make(1) or parallel(1).

Author: jengelh

doc/gromox-mbop.8

@@ -167,12 +167,13 @@ Timed deletion of trash:
 gromox\-mbop \-u [email protected] emptyfld \-Rt 1week \-\-soft DELETED
 .SH for\-all\-users
 .SS Synopsis
-\fBfor\-all\-users\fP [\fB\-t\fP \fIthreads\fP] \fIcommand\fP [command-args...]
+\fBfor\-all\-users\fP [\fB\-j\fP \fIjobs\fP] \fIcommand\fP [command-args...]
 .SS Options
 .TP
-\fB\-t\fP \fIthreads\fP
-Maximum parallel execution factor. (Experimental, not implemented for all
-actions.) 0 means autodetect.
+\fB\-j\fP \fIjobs\fP
+Maximum parallel execution factor. (Experimental.) 0 means autosizing. Only
+ping/vacuum/unload support this, and the option is otherwise ignored. Use
+external tools like parallel(1) or make(1) for guaranteed parallelization.
 .br
 Default: \fI1\fP
 .SS Description

tools/mbop_main.cpp

@@ -648,14 +648,14 @@ namespace for_all_wrap {
 
 static unsigned int g_numthreads = 1;
 static constexpr HXoption g_options_table[] = {
-	{{}, 't', HXTYPE_UINT, &g_numthreads, {}, {}, {}, "Maximum concurrency for execution", "INTEGER"},
+	{{}, 'j', HXTYPE_UINT, &g_numthreads, {}, {}, {}, "Maximum concurrency for execution", "INTEGER"},
 	HXOPT_AUTOHELP,
 	HXOPT_TABLEEND,
 };
 
 static int help()
 {
-	fprintf(stderr, "Usage: for-all-users [-t threads] command [args...]\n");
+	fprintf(stderr, "Usage: for-all-users [-j jobs] command [args...]\n");
 	global::command_overview();
 	return EXIT_PARAM;
 }