-
Notifications
You must be signed in to change notification settings - Fork 0
/
flood.1
79 lines (79 loc) · 1.93 KB
/
flood.1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
.\" flood.1 - Copyright (c) 2017, Sijmen J. Mulder (see LICENSE.md)
.Dd November 18, 2017
.Dt FLOOD 1
.Os
.Sh NAME
.Nm flood
.Nd rapidly invoke (flood) a command
.Sh SYNOPSIS
.Nm flood
.Op Fl d Ar delay
.Op Fl j Ar maxjobs
.Op Fl n Ar count
.Ar command
.Op Ar argument ...
.Sh DESCRIPTION
.Nm
repeatedly invokes a command with a short delay between invocations.
It does not wait for previous invocations to finish.
Output is discarded,
but results are summarily reported using single characters:
.Bl -column -offset indent ".Sy Character" ".Sy Meaning"
.It Sy Character Ta Sy Meaning
.It . Ta Command invoked
.It * Ta Command completed successfully
.It ! Ta Command completed with an error status
.It @ Ta Error invoking the command
.El
.Pp
A tally of the number of invocations, successes and failures
is printed when the program terminates, by
.Dv SIGINT
.Pq Ctrl+C
or otherwise, or when sent
.Dv SIGINFO
.Pq Ctrl+T
on supported systems like BSD and macOS.
.Pp
The name and inspiration come from the
.Xr ping 1
.Fl f
option.
.Pp
The following options are supported:
.Bl -tag -width Ds
.It Fl d Ar delay
Minimum delay between command executions, in miliseconds.
Defaults to 100 (10 per second).
.It Fl j Ar maxjobs
Limits the number of simultaneously running commands.
Once reached,
.Nm
waits for previously invoked commands to complete before starting a new one.
Defaults to 0, which means no limit.
.It Fl n Ar count
Limits the total number of command invocations.
Once reached,
.Nm
waits for all previously launched commands to complete,
prints a tally, and exits.
Defaults to 0, which means no limit.
.El
.Sh EXAMPLES
Flood example.com with 100 requests using
.Xr curl 1
and print a tally:
.Pp
.Dl $ flood -n100 curl example.com
.Pp
Repeatedly run the
.Xr sleep 1
utility as quickly as possible,
but never have more than 10 running at the same time:
.Pp
.Dl $ flood -d0 -j10 sleep 1
.Sh SEE ALSO
.Xr ping 1 Fl f
.Sh AUTHORS
.An Sijmen J. Mulder
.Aq Mt ik@sjmulder.nl .