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Full Discussion: Do loop doesn't iterate
Top Forums Shell Programming and Scripting Do loop doesn't iterate Post 302820409 by Scott on Wednesday 12th of June 2013 03:33:22 PM
Old 06-12-2013
You set a variable called cmd. Then what? Where do you "run" it? And what is $Program?
 

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LEARN ABOUT SUSE

irdadump

IRDADUMP(8)															       IRDADUMP(8)

NAME

       irdadump - monitors the IrDA traffic on one or more links.

SYNOPSIS

       irdadump [ -b ] [ -c n ] [ -d ] [ -x ] [ -s n ] [ -t ] [ -l ] [ -v ] [ -i device ]

OPTIONS

       -b dump bytes in columns

       -c n set snapcols for byte printing with -b option

       -d prints the time difference between the current and the previous frame

       -x dump frame (bytes and ascii)

       -s n set snaplen for -b and -x option

       -t force TTP decoding of unknown connections

       -l set line buffering on output file

       -v verbose

       -i device interface

DESCRIPTION

       irdadump  is  a	tool for monitoring the IrDA traffic on one or more links. Just write "make" to compile the program. When you run the pro-
       gram, you should be able to see the IrDA traffic (if any).

       One advantage of implementing IrDA device drivers as network device drivers is that you should be able to attach sniffers to the device (or
       actually  the  packet  type).  That  way, it is possible to use a really handy utility called irdadump (instead of tcpdump). This will make
       debugging MUCH easier. Linux-2.2 implements the BPF (Berkeley Packet Filter), so its possible to filter out exactly the frames you want	to
       see.  You may use hostname to separate different machines names.  Or grep to filter the output, too.

       irdadump must be run as root or installed setuid root, as it requires root privileges.

EXAMPLES

       The output should look something like this:

       / # ./irdadump
       20:11:45.412199 xid:cmd 0x0015c23b > 0xffffffff S=6 s=0
       20:11:45.492137 xid:cmd 0x0015c23b > 0xffffffff S=6 s=1
       20:11:45.572137 xid:cmd 0x0015c23b > 0xffffffff S=6 s=2
       20:11:45.652208 xid:cmd 0x0015c23b > 0xffffffff S=6 s=3
       20:11:45.732137 xid:cmd 0x0015c23b > 0xffffffff S=6 s=4
       20:11:45.812137 xid:cmd 0x0015c23b > 0xffffffff S=6 s=5
       20:11:45.892175 xid:cmd 0x0015c23b > 0xffffffff S=6 s=255 Linux
       20:11:45.902362 xid:rsp 0xf7be8388 < 0x0015c23b S=6 s=5 ACTiSYS IR100M
       20:11:48.412197 xid:cmd 0x0015c23b > 0xffffffff S=6 s=0
       20:11:48.492656 xid:cmd 0x0015c23b > 0xffffffff S=6 s=1
       20:11:48.572177 xid:cmd 0x0015c23b > 0xffffffff S=6 s=2
       20:11:48.652169 xid:cmd 0x0015c23b > 0xffffffff S=6 s=3
       20:11:48.732177 xid:cmd 0x0015c23b > 0xffffffff S=6 s=4
       20:11:48.812153 xid:cmd 0x0015c23b > 0xffffffff S=6 s=5
       20:11:48.822371 xid:rsp 0xf7be8388 < 0x0015c23b S=6 s=4 ACTiSYS IR100M

       15 packets received by filter
       Turning on the "-d" option will make irdadump print the time difference between the current and the previous frame:

       / # ./irdadump -d
       20:11:18.412475 (0982.06 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=0
       20:11:18.492345 (0079.87 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=1
       20:11:18.572376 (0080.03 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=2
       20:11:18.652979 (0080.60 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=3
       20:11:18.732354 (0079.38 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=4
       20:11:18.755093 (0022.74 ms) xid:rsp 0xf7be8388 < 0x0015c23b S=6 s=3 ACTiSYS IR100M
       20:11:18.812350 (0057.26 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=5
       20:11:18.892518 (0080.17 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=255 Linux
       20:11:21.412486 (2519.97 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=0
       20:11:21.492395 (0079.91 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=1
       20:11:21.572368 (0079.97 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=2
       20:11:21.652405 (0080.04 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=3
       20:11:21.732458 (0080.05 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=4
       irdadump must be run as root or installed setuid root, as it requires root privileges.

       irdadump -d -x -s 256 will check the contents of the frames. This should tell us if the frames have malformed content, or if the irda stack
       is doing something wrong.

DIAGNOSTICS

       N.N.

BUGS

       N.N.

SEE ALSO

       irattach(8), irdaping(8), irdadump(8), findchip(8), irpsion5(8), modprobe(8)

       Linux/IrDA Project http://irda.sourceforge.net -*- Linux/IrDA-Tutorial  http://www.hpl.hp.com/personal/Jean_Tourrilhes/IrDA/index.html  -*-
       Infrared-HOWTO http://tuxmobil.org/howtos.html

AUTHOR

       This  manual page is written by Werner Heuser <wehe@tuxmobil.org>. It is based on the READMEs from irda-utils by the Linux/IrDA Project and
       the Linux/IrDA-Tutorial.

COPYRIGHT

       Copyright (c) 2001 Werner Heuser

       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License (GFDL), Version
       1.1  or	any  later  version  published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover
       Texts.

								   03 July 2006 						       IRDADUMP(8)
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