Sponsored Content
Operating Systems Linux Debian Reading data from a serial port Post 302919913 by Meow613 on Sunday 5th of October 2014 03:58:46 PM
Old 10-05-2014
Thank you Coorona688

Code:
root@meow:/home/ethan#  lsof /dev/ttyS0
COMMAND  PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
screen  3871 root    6u   CHR   4,64      0t0 1119 /dev/ttyS0

---------- Post updated at 03:58 PM ---------- Previous update was at 03:29 PM ----------

Thanks Corona668

Here is some more info -
Code:
root@meow:/home/ethan# cat < /dev/ttyS0 > myfile
^Z
[1]+  Stopped                 cat < /dev/ttyS0 > myfile
root@meow:/home/ethan# locate myfile
/home/ethan/myfile
root@meow:/home/ethan# cat myfile
root@meow:/home/ethan# cat < /dev/ttyS0 > myfile
^Z
[2]+  Stopped                 cat < /dev/ttyS0 > myfile
root@meow:/home/ethan# chown ethan:ethan myfile
root@meow:/home/ethan# cat < /dev/ttyS0 > myfile
^C
root@meow:/home/ethan# cat myfile
root@meow:/home/ethan# ls -l myfile
-rw-r--r-- 1 ethan ethan 0 Oct  5 15:54 myfile
root@meow:/home/ethan# chmod 777 myfile
root@meow:/home/ethan# ls -l myfile
-rwxrwxrwx 1 ethan ethan 0 Oct  5 15:54 myfile
root@meow:/home/ethan# cat < /dev/ttyS0 > myfile
^Z
[3]+  Stopped                 cat < /dev/ttyS0 > myfile
root@meow:/home/ethan# cat myfile

TIA
 

9 More Discussions You Might Find Interesting

1. Programming

Reading incoming data in serial ports

Hi every body, i have the following problem : I need to read incoming data from a serial port, this port has connected a weigth device to it that send the weigth and i need to read this data to my aplication, i had this problem in Window Enviroment and i resolve with a "C" routine, but in Unix... (1 Reply)
Discussion started by: jricardorm
1 Replies

2. Programming

serial port reading

Hai there, Can any one provide me with a ansi c source code for opening com1 or com2 and read data. The port is connected to another serial communication device on rs232 port. The o/s is Sco Unix 5.0.6 Matter urgent Viswanath (0 Replies)
Discussion started by: viswanath
0 Replies

3. SCO

data transfer from serial port

dear sir, pls. can you help me ? , my os is unix sco 5.0.4 and ,server dat derive (1,4gb) not working, now i want to transfer my server data in other machine (unix/other possible) by serial port/other port comminication. thanks pankaj raval (2 Replies)
Discussion started by: pankajbraval
2 Replies

4. Solaris

Serial port on the T5140

What is the serial port on the T5140 used for. (4 Replies)
Discussion started by: pgsanders
4 Replies

5. Shell Programming and Scripting

Need help with serial port

Hi, I have a external board connected to my serial port. I need to execute "shutdown -r now" command when system boot up. When system boots up it requires a username ans password. Then I need to run my command. I can use rc script but that is rebooting system before it asks for username and... (0 Replies)
Discussion started by: charlie.arya
0 Replies

6. Solaris

How to enable Serial port on ILOM, when Network Port is enabled in parallel

Hi Everyone, In my environment, I have few T5220. On the iLOM Management Card, I have both Network and Serial port are cabled, I don't have any issues while I try to connect using Network Management port, but when I try to connect the serial port for the same server which is actually connected... (3 Replies)
Discussion started by: bobby320
3 Replies

7. Shell Programming and Scripting

reading from and writing to serial port

hello all, please any one can provide me the shell script to write data to /dev/ttyS1 and read responce from /dev/ttyS1 and compare the responce to some string .. thnxx ---------- Post updated at 03:35 PM ---------- Previous update was at 11:46 AM ---------- any body help me.. how do i... (1 Reply)
Discussion started by: yashwantkumar
1 Replies

8. Programming

Wrong data with Read from a serial port.

hi, I've a problem on my C/C++ program with Posix Library. I have to read data from the serial but I have incorrect data, in fact I get a bunch of zeros: "2953.3174, 2785.2126, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0 , 0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ,... (24 Replies)
Discussion started by: enaud
24 Replies

9. Solaris

Cabling and adapters to communicate to service processor serial port from Windows PC with USB port.

Hello, I have an unloaded T5140 machine and want to access the ILOM for the first time and subsequently the network port after that., and then load Solaris 10 the final January 2011 build. The first part is what confuses me -the cabling. I am coming from a Windows machine (w/appropriate... (5 Replies)
Discussion started by: joboy
5 Replies
NTFSCP(8)						      System Manager's Manual							 NTFSCP(8)

NAME
ntfscp - copy file to an NTFS volume. SYNOPSIS
ntfscp [options] device source_file destination DESCRIPTION
ntfscp will copy file to an NTFS volume. destination can be either file or directory. In case if destination is directory specified by name then source_file is copied into this directory, in case if destination is directory and specified by inode number then unnamed data attribute is created for this inode and source_file is copied into it (WARNING: it's unusual to have unnamed data streams in the directo- ries, think twice before specifying directory by inode number). OPTIONS
Below is a summary of all the options that ntfscp accepts. Nearly all options have two equivalent names. The short name is preceded by - and the long name is preceded by --. Any single letter options, that don't take an argument, can be combined into a single command, e.g. -fv is equivalent to -f -v. Long named options can be abbreviated to any unique prefix of their name. -a, --attribute NUM Write to this attribute. -i, --inode Treat destination as inode number. -N, --attr-name NAME Write to attribute with this name. -n, --no-action Use this option to make a test run before doing the real copy operation. Volume will be opened read-only and no write will be done. -f, --force This will override some sensible defaults, such as not working with a mounted volume. Use this option with caution. -h, --help Show a list of options with a brief description of each one. -q, --quiet Suppress some debug/warning/error messages. -V, --version Show the version number, copyright and license ntfscp. -v, --verbose Display more debug/warning/error messages. DATA STREAMS
All data on NTFS is stored in streams, which can have names. A file can have more than one data streams, but exactly one must have no name. The size of a file is the size of its unnamed data stream. Usually when you don't specify stream name you are access to unnamed data stream. If you want access to named data stream you need to add ":stream_name" to the filename. For example: by opening "some.mp3:artist" you will open stream "artist" in "some.mp3". But windows usually prevent you from accessing to named data streams, so you need to use some program like FAR or utils from cygwin to access named data streams. EXAMPLES
Copy new_boot.ini from /home/user as boot.ini to the root of an /dev/hda1 NTFS volume: ntfscp /dev/hda1 /home/user/new_boot.ini boot.ini Copy myfile to C:somepathmyfile:stream (assume that /dev/hda1 letter in windows is C): ntfscp -N stream /dev/hda1 myfile /some/path BUGS
There are no known problems with ntfscp. If you find a bug please send an email describing the problem to the development team: ntfs-3g-devel@lists.sf.net AUTHORS
ntfscp was written by Yura Pakhuchiy, with contributions from Anton Altaparmakov and Hil Liao. It was ported to ntfs-3g by Erik Larsson. DEDICATION
With love to Marina Sapego. AVAILABILITY
ntfscp is part of the ntfs-3g package and is available from: http://www.tuxera.com/community/ SEE ALSO
ntfsprogs(8) ntfs-3g 2011.4.12AR.4 September 2007 NTFSCP(8)
All times are GMT -4. The time now is 11:51 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy