Just wondering about a little "quirk" which I seem to have found when using dd (FWIW on that note, I'm using a flash install of Parted Magic to run dd in these tests...)
Thinking about it, there should be some measurable excitement associated with
Code:
dd if=/dev/zero of=/dev/sda* obs=10M
as the wildcard should take out each sda partition in turn.
Indeed, if one has multiple partitions to be wiped (while possibly keeping the boundaries for each), this might appear to be one way of getting the job done without much fuss.
However, using the above commandline, I've seen this output repeated on several different systems instead:
Code:
dd: writing to /dev/sda*': No space left on device
2007040+0 records in
97+1 records out
1027362816 bytes (1.0 GB) copied, 1.25925 s, 816 MB/s
...with what seems to be no overwrite activity whatsoever.
So, the central question is: Why do I always see the same exact records in/out @ 1.0 GB output here, regardless of the target machine/drive? Moreover, what does dd think it's writing to in this case?
Hi Friends,
Can any of you explain me about the below line of code?
mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`
Im not able to understand, what exactly it is doing :confused:
Any help would be useful for me.
Lokesha (4 Replies)
Hi everyone:
I have built a tcl script, this script communicate with an ADA program trough a socket, sending binary data, the sender proc is this one:
The code where im sending info is here:
proc p_send_data { DATA } {
global connection
puts "Sending trough $connection..."
#... (2 Replies)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
logs:
"/home/abc/public_html/index.php"
"/home/abc/public_html/index.php"
"/home/xyz/public_html/index.php"
"/home/xyz/public_html/index.php"
"/home/xyz/public_html/index.php"
how to use "cut" or "awk" or "sed" to get the following result:
abc
abc
xyz
xyz
xyz (8 Replies)
The system don't boot.
on the screen appears following:
press enter to maintenance (or type CTRL-D to continue)...I checked with format command.
... the slices "0-root","1-swap","2-backup" exist.
...the slises "3-var","6-usr" -unassigned. :( (16 Replies)
How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing To e-mail address
and column 3 contains cc e-mail address to include with same email.
Sample input file, email.txt
Below is an sample code where... (2 Replies)
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Hi 2 all,
i have had AIX 7.2
:/# /usr/IBMAHS/bin/apachectl -v
Server version: Apache/2.4.12 (Unix)
Server built: May 25 2015 04:58:27
:/#:/# /usr/IBMAHS/bin/apachectl -M
Loaded Modules:
core_module (static)
so_module (static)
http_module (static)
mpm_worker_module (static)
... (3 Replies)
Discussion started by: penchev
3 Replies
LEARN ABOUT CENTOS
sgpio
sgpio(1) USER COMMANDS sgpio(1)NAME
sgpio - captive backplane LED control utility
SYNOPSIS
sgpio [-h] [-V] [[-d|--disk <device>[,<device>...]] | [-p|--port <port>[,<port>...]]] [-s|--status <status>] [-f|--freq <frequency>]
DESCRIPTION
Serial General Purpose Input Output (SGPIO) is a communication method used between a main board and a variety of internal and external hard
disk drive bay enclosures. This utility can be used to control LEDs in an enclosure. For more information about SGPIO, please consult the
SFF-8485 Specification.
OPTIONS -h, --help
displays a short help text
-V, --version
displays the utility and AHCI SGPIO specification
-d, --disk
disk name of LED location. Names are sda,sdb,sdc,... Multiple names can be provided in a comma-delimited list.
-p, --port
SATA port number of LED location, can be used if a disk name is no longer valid. 0,1,2,3,... Multiple ports can be provided in a
comma-delimited list.
-s, --status
status of the LED to set. LED status is: locate, fault, rebuild, off
-f, --freq
Set the frequency at which the LED should blink (in Hz). Frequency should be an integer between 1 and 10.
EXAMPLES
Set the locate LED on SDA with an Intel Intelligent backplane:
sgpio -d sda -s locate
Set the locate LED on SDA to flash at 3 Hz for non-intelligent backplanes:
sgpio -d sda -s locate -f 3
Set SATA port 2 with fault at a 3 Hz flash rate:
sgpio -p 2 -s fault -f 3
Set disks sda through sdf to fault:
sgpio -d sda,sdb,sdc,sdd,sde,sdf -s fault
EXIT STATUS
sgpio should return zero when successful. It will return with a non-zero value if there was a failure.
AUTHOR
Eric R. Hall <Eric.R.Hall@intel.com>
version 0.3 December 2007 sgpio(1)
10-17-2014
(FWIW on that note, I'm using a flash install of Parted Magic to run dd in these tests...)