hi all, I'm really newbie on this and I need some help.
how is the best way to extract a strig or substring from a each line in a file.
e.g. I want to print only this ERROR=JUD+the followed numbers from one line like this one, considering the numbers change related to different errors
... (1 Reply)
On OS 10.4.11
I have filenames like:
670711 SA T2 v1-1_DS_EF.doc
CT_670520 AM T1 v1-2_DS_EF.doc
CT_670716 - 2 SA T4 v1-2_DS_EF.doc
CT_670713 SA T3 v1-1_DS_EF.doc
670421 PA DYP1 v1-1_DS_EF.doc
CT_670425 PA DYP2 v1-1_DS_EF.doc
CT_670107 RA T3 v1-2_DS_EF.doc
CT_670521 AM T2 v1-2_DS_EF.doc... (3 Replies)
I have a shell script that uses wget to grab a bunch of html from a url.
URL_DATA=`wget -qO - "$URL1"`
I now have a string $URL_DATA that I need to pull a substring out of..say I had the following in my string
<p><a href="/scooby/929011567.html">Dog pictures check them out! -</a><font... (3 Replies)
i have srtring i.e. "NAME,CLASS,AGE" (length of string is not constant) and from this string i've extract each word delimited by "," (comma).
INPUT: "NAME,CLASS,AGE"
OUTPUT: NAME
CLASS
AGE
how can i do that?
i have tried some string manipulation function like... (5 Replies)
Hi,
I have an input string say for example:
ABC,DEF,IJK,LMN,...,XYZ
The above string is comma delimited. Now I have to extract the last part after the comma i.e. XYZ.
:b: (3 Replies)
Hello,
A question please.
A have a file that contains a string. Ex:
AAAABBCCCCCDDEEEEEEEEEEFF
I'd want to recover 2 substrings, 'BB' and 'FF' and then leave them in a new file.
Could anoyone help me please?
Thanks in advance (3 Replies)
Hello,
A question please.
A have a file that contains a string. Ex:
AAAABBCCCCCDDEEEEEEEEEEFF
I'd want to recover 2 substrings, 'BB' and 'FF' and then leave them in a new file.
From position 5, 2 caracters (ex:"BB") and from position 25, 2 caracters (ex:"FF") in a file.
Could anoyone help me... (3 Replies)
Hi all,
Please, i'd like to extract string just before '.fr'.
Here is some lines of my file:
g-82.text.text1.fr.worker1
g-xx.yyyyyy.zzzz.fr.worker2
i'd like to extract this text:
g-82.text.text1
g-xx.yyyyyy.zzzz
Please, which command i have to use in my script shell ?
... (16 Replies)
Discussion started by: chercheur111
16 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)