I try to test the carriage return in a variable.
$ LENGTH=`expr $VARIABLE : ".*"` will return the length of the variable. But this doesn't work if $VARIABLE has zero length.
Any help will be well appreciated.
Thanks in advance.
Giovanni (4 Replies)
I am using the following code in my shell script
list=`sqlplus -s $user/$pwd@$dbms<<EOF
WHENEVER SQLERROR EXIT SQL.SQLCODE
set pagesize 0 feedback off verify off heading off echo off
select * from control_tbl
where src_nm=$3
and extrct_nm=$4;
exit SQL.SQLCODE;
EOF`
ERROR=$?... (1 Reply)
Hi,
Here is my program that is returning a DATE:
#! /usr/bin/ksh
db=tcore_dev1
bteq <<end
.logon $password_core
.export report file=$BTEQ_OUTPUT_FILE_$$
select cast(add_months(cast(substr(cast(max(closedate) as varchar(10)),1,8)||'01' as Date),1)-1 as timestamp(0)) from $db.repo... (2 Replies)
Hi all,
i have written a code to ftp a file from one server to other.The ftp is happeneing successfully,but i am not able to capture the return code,to check if ftp has failed.
plz help me to find out the return code....this is urgent
below is the code i have written... (3 Replies)
Hey Folks and Gurus there
I am trying to replicate this logic in bash :
(1) if ; then
function1 parameters &
function2 parameters &
fi
Is there an easy method esp one with regex that can do this comparision.
e.g. $var is compared to this list ( case regardless ) (... (1 Reply)
Hi All,
My shell script will call a java component with some arguments , the java component returns a string value to the shell script. How to assign the return value to the shell variable.
Here is the sample code.
In my shell script i am calling the java as fallows.
--exporting... (1 Reply)
I have a process that copies files from a main storage server to main other servers. We are attempting to speed up the processing and have thought that the best method would be to use concurrent file copying.
What was suggested is that we change from using a simple RCP and waiting for it to... (3 Replies)
Hi
I am executing database backup via shell script (Korn). The backup log is long, but I would like to capture only the last line so I can send an email if it fails
Example of failed backup (only last 3 lines)
BR0056I End of database backup: bejbofoh.aff 2012-07-26 07.31.21
BR0280I... (7 Replies)
is it possible to capture the 3 digit return code of ftp commands in a local variable inside a shell script?
Code:
ftp remoteserver << EOFTP
quote USER uid
quote PASS pass
prompt
cd remote_directory
mput file.txt
bye
EOFTP
in the above script, if cd ... (4 Replies)
Discussion started by: Little
4 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)