* `-R`: add between 0 and RANDDELAY seconds to the scheduled time.
* `-s`: commands are executed even if they are SLACK (default: 60) seconds late.
+The durations RANDDELAY and SLACK and TIMEWAIT are parsed as seconds,
+unless a postfix of `m` for minutes, `h` for hours, or `d` for days is used.
+
The remaining arguments are patterns for the time fields:
* `-d`: day of month
When `-T` is *not* passed, snooze will start finding the first matching time
starting from the mtime of TIMEFILE, and taking SLACK into account.
-(E.g. `-H0 -s$((24*60*60)) -t timefile` will start an instant
+(E.g. `-H0 -s 1d -t timefile` will start an instant
execution when timefile has not been touched today, whereas without `-t`
this would always wait until next midnight.)
Run a job daily, never twice a day:
- exec snooze -H0 -s $((24*60*60)) -t timefile \
+ exec snooze -H0 -s 1d -t timefile \
sh -c 'run-parts /etc/cron.daily; touch timefile'
Use snooze inline, run a mirror script every hour at 30 minutes past,
but ensure there are at least 20 minutes in between.
set -e
- snooze -H'*' -M30 -t timefile -T $((20*60))
- touch timefile # remove this if instantly retrying on failure is ok
+ snooze -H'*' -M30 -t timefile -T 20m
+ touch timefile # remove this if instantly retrying on failure were ok
mirrorallthethings
touch timefile
return n;
}
+static long
+parse_dur(char *s)
+{
+ long n;
+ char *end;
+
+ errno = 0;
+ n = strtol(s, &end, 10);
+ if (errno) {
+ perror("strtol");
+ exit(1);
+ }
+ if (n < 0) {
+ fprintf(stderr, "negative duration\n");
+ exit(1);
+ }
+ switch (*end) {
+ case 'm': n *= 60; break;
+ case 'h': n *= 60*60; break;
+ case 'd': n *= 24*60*60; break;
+ case 0: break;
+ default:
+ fprintf(stderr, "junk after duration: %s\n", end);
+ exit(1);
+ }
+ return n;
+}
+
static int
parse(char *expr, char *buf, long bufsiz, int offset)
{
break;
case 'n': nflag++; break;
case 'v': vflag++; break;
- case 's': slack = atoi(optarg); break;
- case 'T': timewait = atoi(optarg); break;
+ case 's': slack = parse_dur(optarg); break;
+ case 'T': timewait = parse_dur(optarg); break;
case 't': timefile = optarg; break;
- case 'R': randdelay = atoi(optarg); break;
+ case 'R': randdelay = parse_dur(optarg); break;
default:
fprintf(stderr, "Usage: %s [-nv] [-t timefile] [-T timewait] [-R randdelay] [-s slack]\n"
" [-d mday] [-m mon] [-w wday] [-D yday] [-W yweek] [-H hour] [-M min] [-S sec] COMMAND...\n"