is there anyway i can write something into a file using a script ?
for e.g. i want to have a line break for the different input
and i want to input different words into the file
i've tried the above and it doesn't work can someone please guide me thanks
and btw is there any good website that i can refer to for such codings of shell?
Hi,
I am writing a bash shell script. How can I tell it to stop. For example, I would like to have something similar to the following:
mike=1
if ; then
STOP THE SCRIPT
fi (3 Replies)
Hello,
I am ftping the file from one unix box to another box. This script works fine. Only problem here is, it is asking the password when ftp the file. How can i stop that. I am providing the password inside the shell script. But it is not accepting this. I need to put this script in crontab.... (5 Replies)
Script_A.sh has
echo "In am in script A"
ksh ## K-shell is invoked.
Script B.sh ## which I am writing...
./script_A.sh
echo "I am in script B"
return 0
When I run:
$> Script_B.sh
$> I am in script A
$>
Basically, on calling Script_A.sh from within Script_B.sh I have the issue of... (2 Replies)
Hi All,
I would like to develop a shell script for stop & start an application server (1-4) on Solaris box. Here are the user requirements for this task.
1. User will input the option which server they wish to stop.
2. Will clear cache files from specific location.
3. ... (1 Reply)
Hi guys, I've found two nifty little scripts on these forums one which detects if the F5 key has been pressed:
#/bin/sh
_key()
{
local kp
ESC=$'\e'
_KEY=
read -d '' -sn1 _KEY
case $_KEY in
"$ESC")
while read -d '' -sn1 -t1 kp
do
_KEY=$_KEY$kp
... (0 Replies)
I have a strange problem.
I have the following in a cron to find files older than a day.
find /dir1/dir2/ ! -name . -prune -name "s*.txt" -type f -mtime +1 -exec echo {} \; | wc -w
It was working fine for the last few days now it suddenly stopped working. I can clearly see files in the... (5 Replies)
Need shell script to:
1/keep polling a directory "receive_dir" irrespective of having files or no files in it.
2/move the files over to another directory "send_dir".
3/the script should only stop polling upon a file "stopfile" get moved to "receive_dir". Thanks !!
My script:
until
do... (0 Replies)
Hi folks,
I am running a shell script it asks for username and password to stop some service, I need to write some script that it will read username and password from my shell script and then sucessfully stop services without prompting username/password query. (13 Replies)
Hi,
I need to create a shell script for automated server patching, with the following scenario:
I have two Linux servers Primary and secondary.
Server patching should start on Primary 1st and then secondary.
1st check both servers are up and running.
Then stop primary and patching will... (1 Reply)
I am writing a bash shell script for GarazLab's "WP EMAIL CRAWLER - AUTO SCRAPER & REAL TIME EXTRACTOR". it contains some commands. I want to stop the shell execution as soon as it encounters an error. how to do it? (8 Replies)
Discussion started by: tahsin352
8 Replies
LEARN ABOUT CENTOS
wdmd
WDMD(8) System Manager's Manual WDMD(8)NAME
wdmd - watchdog multiplexing daemon
SYNOPSIS
wdmd [OPTIONS]
DESCRIPTION
This daemon opens /dev/watchdog and allows multiple independent sources to detmermine whether each KEEPALIVE is done. Every test interval
(10 seconds), the daemon tests each source. If any test fails, the KEEPALIVE is not done. In a standard configuration, the watchdog timer
will reset the system if no KEEPALIVE is done for 60 seconds ("fire timeout"). This means that if a single test fails 5-6 times in row,
the watchdog will fire and reset the system. With multiple test sources, fewer separate failures back to back can also cause a reset, e.g.
T seconds, P pass, F fail
T00: test1 P, test2 P, test3 P: KEEPALIVE done
T10: test1 F, test2 F, test3 P: KEEPALIVE skipped
T20: test1 F, test2 P, test3 P: KEEPALIVE skipped
T30: test1 P, test2 F, test3 P: KEEPALIVE skipped
T40: test1 P, test2 P, test3 F: KEEPALIVE skipped
T50: test1 F, test2 F, test3 P: KEEPALIVE skipped
T60: test1 P, test2 F, test3 P: KEEPALIVE skipped
T60: watchdog fires, system resets
(Depending on timings, the system may be reset sometime shortly before T60, and the tests at T60 would not be run.)
A crucial aspect to the design and function of wdmd is that if any single source does not pass tests for the fire timeout, the watchdog is
guaranteed to fire, regardless of whether other sources on the system have passed or failed. A spurious reset due to the combined effects
of multiple failing tests as shown above, is an accepted side effect.
The wdmd init script will load the softdog module if no other watchdog module has been loaded.
wdmd cannot be used on the system with any other program that needs to open /dev/watchdog, e.g. watchdog(8).
Test Source: clients
Using libwdmd, programs connect to wdmd via a unix socket, and send regular messages to wdmd to update an expiry time for their connection.
Every test interval, wdmd will check if the expiry time for a connection has been reached. If so, the test for that client fails.
Test Source: scripts
wdmd will run scripts from a designated directory every test interval. If a script exits with 0, the test is considered a success, other-
wise a failure. If a script does not exit by the end of the test interval, it is considered a failure.
OPTIONS --version, -V
Print version.
--help, -h
Print usage.
--dump, -d
Print debug information from the daemon.
--probe, -p
Print path of functional watchdog device. Exit code 0 indicates a
functional device was found. Exit code 1 indicates a functional device
was not found.
-D
Enable debugging to stderr and don't fork.
-H 0|1
Enable (1) or disable (0) high priority features such as realtime
scheduling priority and mlockall.
-G name
Group ownership for the socket.
-S 0|1
Enable (1) or disable (0) script tests.
-s path
Path to scripts dir.
-k num
Kill unfinished scripts after num seconds.
-w path
The path to the watchdog device to try first.
2011-08-01 WDMD(8)