watch -t

NEWS

@@ -1,5 +1,6 @@
 procps-3.1.5 --> procps-3.1.6
 
+watch: new --no-title option
 handle SPARC Linux badness
 rare crash fixed
 compile with gcc 2.91.xx again

proc/library.map

@@ -1,5 +1,7 @@
 _3_1_5 {
 global:
+  __cyg_profile_func_enter; __cyg_profile_func_exit; main;
+
   readproc; readproctab; ps_readproc; look_up_our_self; escape_command;
   escape_str; escape_strlist;
   openproc; closeproc;

proc/version.c

@@ -2,7 +2,7 @@
  * Copyright (c) 1995 Martin Schulze <joey@infodrom.north.de>
  * Ammended by cblake to only export the function symbol.
  *
- * Modified by Albert Cahalan
+ * Modified by Albert Cahalan, ????-2003
  *
  * Redistributable under the terms of the
  * GNU Library General Public License; see COPYING
@@ -31,14 +31,13 @@ void display_version(void) {
 
 #define LINUX_VERSION(x,y,z)   (0x10000*(x) + 0x100*(y) + z)
 
-int linux_version_code = 0;
+int linux_version_code;
 
 static void init_Linux_version(void) __attribute__((constructor));
 static void init_Linux_version(void) {
     static struct utsname uts;
     int x = 0, y = 0, z = 0;	/* cleared in case sscanf() < 3 */
     
-    if (linux_version_code) return;
     if (uname(&uts) == -1)	/* failure implies impending death */
 	exit(1);
     if (sscanf(uts.release, "%d.%d.%d", &x, &y, &z) < 3)

watch.1

@@ -3,7 +3,7 @@
 watch \- execute a program periodically, showing output fullscreen
 .SH SYNOPSIS
 .B watch
-.I [\-dhv] [\-n <seconds>] [\-\-differences[=cumulative]] [\-\-help] [\-\-interval=<seconds>] [\-\-version] <command>
+.I [\-dhvt] [\-n <seconds>] [\-\-differences[=cumulative]] [\-\-help] [\-\-interval=<seconds>] [\-\-no\-title] [\-\-version] <command>
 .SH DESCRIPTION
 .BR watch
 runs
@@ -23,7 +23,12 @@ or
 flag will highlight the differences between successive updates.  The 
 .I --cumulative
 option makes highlighting "sticky", presenting a running display of all
-positions that have ever changed.
+positions that have ever changed.  The
+.I -t
+or
+.I --no-title
+option turns off the header showing the interval, command, and current
+time at the top of the display, as well as the following blank line.
 .PP
 .BR watch
 will run until interrupted.

watch.c

@@ -29,12 +29,13 @@ static struct option longopts[] = {
 	{"differences", optional_argument, 0, 'd'},
 	{"help", no_argument, 0, 'h'},
 	{"interval", required_argument, 0, 'n'},
+	{"no-title", no_argument, 0, 't'},
 	{"version", no_argument, 0, 'v'},
 	{0, 0, 0, 0}
 };
 
 static char usage[] =
-    "Usage: %s [-dhnv] [--differences[=cumulative]] [--help] [--interval=<n>] [--version] <command>\n";
+    "Usage: %s [-dhntv] [--differences[=cumulative]] [--help] [--interval=<n>] [--no-title] [--version] <command>\n";
 
 static char *progname;
 
@@ -42,6 +43,7 @@ static int curses_started = 0;
 static int height = 24, width = 80;
 static int screen_size_changed = 0;
 static int first_screen = 1;
+static int show_title = 2;  // number of lines used, 2 or 0
 
 #define min(x,y) ((x) > (y) ? (y) : (x))
 
@@ -101,7 +103,7 @@ main(int argc, char *argv[])
 	setlocale(LC_ALL, "");
 	progname = argv[0];
 
-	while ((optc = getopt_long(argc, argv, "+d::hn:v", longopts, (int *) 0))
+	while ((optc = getopt_long(argc, argv, "+d::hn:vt", longopts, (int *) 0))
 	       != EOF) {
 		switch (optc) {
 		case 'd':
@@ -112,6 +114,9 @@ main(int argc, char *argv[])
 		case 'h':
 			option_help = 1;
 			break;
+		case 't':
+			show_title = 0;
+			break;
 		case 'n':
 			{
 				char *str;
@@ -201,22 +206,24 @@ main(int argc, char *argv[])
 			first_screen = 1;
 		}
 
-		/* left justify interval and command, right justify time, clipping all
-		   to fit window width */
-		asprintf(&header, "Every %ds: %.*s",
-			 interval, min(width - 1, command_length), command);
-		mvaddstr(0, 0, header);
-		if (strlen(header) > (size_t) (width - tsl - 1))
-			mvaddstr(0, width - tsl - 4, "...  ");
-		mvaddstr(0, width - tsl + 1, ts);
-		free(header);
+		if (show_title) {
+			// left justify interval and command,
+			// right justify time, clipping all to fit window width
+			asprintf(&header, "Every %ds: %.*s",
+				 interval, min(width - 1, command_length), command);
+			mvaddstr(0, 0, header);
+			if (strlen(header) > (size_t) (width - tsl - 1))
+				mvaddstr(0, width - tsl - 4, "...  ");
+			mvaddstr(0, width - tsl + 1, ts);
+			free(header);
+		}
 
 		if (!(p = popen(command, "r"))) {
 			perror("popen");
 			do_exit(2);
 		}
 
-		for (y = 2; y < height; y++) {
+		for (y = show_title; y < height; y++) {
 			int eolseen = 0, tabpending = 0;
 			for (x = 0; x < width; x++) {
 				int c = ' ';