In this case I understand the error message is written to the errorlog.txt
...
That's correct.
Quote:
... and I assume its bacause the return code from the command ls -l abc might return 2 if "abc" doesnt exists.
...
Nope, your assumption is incorrect.
The number 2 is not some return code that you are capturing in errlog.txt. Instead, it is the file descriptor of the stderr file. The three files - stdin, stdout and stderr are always open and have the descriptors 0, 1 and 2 assigned to them respectively. By default, stdin is your keyboard, stdout is your screen and stderr is your screen as well. Which means, by default, all error messages are directed to your screen. If you want to redirect an error message to something other than the screen (a file, for instance), then you'd use the construct "2>err.txt" after the command, which redirects the error message to the file "err.txt".
Quote:
My question is: How about if the command return non zero return code and is not equal to 2?
If the command returns a return code other than 2, it will still be captured in "err.txt" if you put the construct "2>err.txt" after that command.
An example follows:
So now if I put "2>err.txt", then this error message should be redirected to "err.txt". As you can see, the error code here is something other than 2.
Hi All,
I have a log file which consists of log messages as follows ->
GLOBALCALLID_CLUSTERID_B NEXT * , O(") CHARACTER
JOINONBEHALFOF NEXT * , O(") CHARACTER
Record 1: Rejected - Error on table IFA_MMV_CDR, column CDRRECORDTYPE.... (1 Reply)
Im trying to execute application and its return code is below
IF Status code=o
echo "........"
else Staus Code =-2 DJRE
then echo "......"
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AIM- Install Oracle 11g on Solaris using VMWare
Steps
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... (5 Replies)
Hi,
I googled a bit, but could not find the answer to my problem.
But I am sure it is a common issue.
I have this code:
#!/bin/perl -w #-d
use strict;
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{
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Hello All,
I am getting the following error message when trying to execute the following script.
AWK=/usr/bin/awk
TR=/usr/bin/tr
SED=/usr/bin/sed
CAT=/usr/bin/cat
MAILFILE=/home//nightly_jobs.tmp
mailto=xxx@gmail.com
Nigh_Status = `db2 "select TYPE from ETL.LOCK where STATUS <> 0 and... (12 Replies)
Hi
I have a requirement to write a script to capture all errors in a Logfile and send the file in email.
If there is any error occurred the subject of email will be ERROR , If there are no error occurred the subject of email will be SUCCESS.
So I created a Log file and put the Appropriate... (2 Replies)
I am trying to create a live image of solaris 11.1.
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Hi All,
I have a requirement to execute multiple scripts (say 4) one after the other in one script and capture log details and error messages in a log file below
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I have two linux servers viz 12.7.44.18 and 12.7.45.18
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Discussion started by: mohtashims
7 Replies
LEARN ABOUT MINIX
textdump
TEXTDUMP(4) BSD Kernel Interfaces Manual TEXTDUMP(4)NAME
textdump -- textdump kernel dumping facility
SYNOPSIS
options KDB
options DDB
DESCRIPTION
The textdump facility allows the capture of kernel debugging information to disk in a human-readable rather than the machine-readable form
normally used with kernel memory dumps and minidumps. This representation, while less complete in that it does not capture full kernel
state, can provide debugging information in a more compact, portable, and persistent form than a traditional dump. By combining textdump
with other ddb(4) facilities, such as scripting and output capture, detailed bug information can be captured in a fully automated manner.
FORMAT
textdump data is stored in a dump partition in the same style as a regular memory dump, and will be automatically extracted by savecore(8) if
present on boot.
textdump files are stored in the tar(5) format, and consist of one or more text files, each storing a particular type of debugging output.
The following parts may be present:
ddb.txt Captured ddb(4) output, if the capture facility has been used. May be disabled by clearing the debug.ddb.textdump.do_ddb
sysctl.
config.txt Kernel configuration, if has been compiled into the kernel. May be disabled by clearing the debug.ddb.textdump.do_config
sysctl.
msgbuf.txt Kernel message buffer, including recent console output if the capture facility has been used. May be disabled by clearing the
debug.ddb.textdump.do_msgbuf sysctl.
panic.txt Kernel panic string, if the kernel panicked before the dump was generated. May be disabled by clearing the
debug.ddb.textdump.do_panic sysctl.
version.txt Kernel version string. My be disabled by clearing the debug.ddb.textdump.do_version sysctl.
Kernel textdumps may be extracted using tar(1).
CONFIGURATION
The textdump facility is enabled as part of the kernel debugger using options KDB and options DDB. By default, kernel dumps generated on
panic or via explicit requests for a dump will be regular memory dumps; however, by using the textdump set command in ddb(4), or by setting
the debug.ddb.textdump.pending sysctl to 1 using sysctl(8), it is possible to request that the next dump be a textdump.
If at the ddb(4) command line, the commands textdump set, textdump status, and textdump unset may be used to set, query, and clear the
textdump pending flag.
As with regular kernel dumps, a dump partition must be automatically or manually configured using dumpon(8).
EXAMPLES
In the following example, the script kdb.enter.panic will run when the kernel debugger is entered as a result of a panic, enable output cap-
ture, dump several useful pieces of debugging information, and then invoke panic in order to force a kernel dump to be written out followed
by a reboot:
script kdb.enter.panic=textdump set; capture on; show allpcpu; bt;
ps; alltrace; show alllock; call doadump; reset
In the following example, the script kdb.enter.witness will run when the kernel debugger is entered as a result of a witness violation,
printing lock-related information for the user:
script kdb.enter.witness=show locks
These scripts may also be configured using the ddb(8) utility.
SEE ALSO tar(1), ddb(4), tar(5), ddb(8), dumpon(8), savecore(8), sysctl(8)HISTORY
The textdump facility first appeared in FreeBSD 7.1.
AUTHORS
The textdump facility was created by Robert N. M. Watson.
BSD December 24, 2008 BSD