Hello All,
I just wanted to know what are the different ways of using commands in combination.
The most common one which i know is using pipes.
Also grouping is also done like ( ls; date) where output of both the commands is displayed.
Are there any other ways of combining various... (2 Replies)
Hi,
I have this following script below. Its searching a log file for 2 string and if found then write the strings to success.txt and If not found write strings to failed.txt . if one found and not other...then write found to success.txt and not found to failed.txt.
I want to optimize this... (3 Replies)
I want to show a output like this
Lee Ballancore
PID TTY TIME CMD
31799 pts/3 00:00:00 vim
31866 pts/3 00:00:00 vim
2495 pts/7 00:00:00 vim
8368 pts/0 00:00:00 vim
9544 pts/2 00:00:00 ps
Alistairr Rutherford
PID TTY TIME CMD
8368 pts/0 00:00:00 vim
9544 pts/2 00:00:00 ps
... (3 Replies)
can we optimize this command ?
sed 's#AAAA##g' /study/i.txt | sed '1,2d' | tr -d '\n\' > /study/i1.txt;
as here i am using two files ...its overhead..can we optimise to use only 1 file
sed 's#AAAA##g' /study/i.txt | sed '1,2d' | tr -d '\n\' > /study/i.txt;
keeping them same but it... (9 Replies)
Hi,
I am cutting data from a fixed length test file and then writing out a new record using the echo command, the problem I have is how to stop multiple spaces from being written to the output file as a single space.
Example:
cat filea | while read line
do
field1=`echo $line | cut -c1-2`
... (6 Replies)
Hi,
I have to assign a value for a varaiable based on a Input. I have written the below code:
if
then
nf=65
elif
then
nf=46
elif
then
nf=164
elif
then
nf=545
elif
then
nf=56
elif
then (3 Replies)
Hi guys,
I feel a bit comfortable now doing bash scripting but I am worried that the way I do it is not optimized and I can do much better as to how I code.
e.g.
I have a whole line in a file from which I want to extract some values.
Right now what I am doing is :
STATE=`cat... (5 Replies)
Hi All,
I have written a new script to check for DB space and size of dump log file before it can be imported into a Oracle DB.
I'm relatively new to shell scripting.
Please help me optimize this script further. (0 Replies)
Hi All,
I have 2 pipe delimited files viz., file_old and file_new. I'm trying to compare these 2 files, and extract all the different rows between them into a new_file.
comm -3 < sort file_old < sort file_new > new_file
I am getting the below error:
-ksh: sort: cannot open
But if I do... (7 Replies)
Two numerical lines, found by either header line, need to be added
and the total placed in a new-header section. Also the total should
should be rounded or cut to a two decimal anynumber.XX format
with the AB string added on the end.
For example: The numerical lines from headers 2 and 3 are... (3 Replies)
Discussion started by: jessandr
3 Replies
LEARN ABOUT SUNOS
tnfxtract
tnfxtract(1) User Commands tnfxtract(1)NAME
tnfxtract - extract kernel probes output into a trace file
SYNOPSIS
tnfxtract [ -d dumpfile -n namelist] tnf_file
DESCRIPTION
The tnfxtract utility collects kernel trace output from an in-core buffer in the Solaris kernel, or from the memory image of a crashed sys-
tem, and generates a binary TNF trace file like those produced directly by user programs being traced.
Either both or neither of the -d and -n options must be specified. If neither is specified, trace output is extracted from the running ker-
nel. If both are specified, the -d argument names the file containing the (crashed) system memory image, and the -n argument names the file
containing the symbol table for the system memory image.
The TNF trace file tnf_file produced is exactly the same size as the in-core buffer; it is essentially a snapshot of that buffer. It is
legal to run tnfxtract while kernel tracing is active, i.e., while the in-core buffer is being written. tnfxtract insures that the output
file it generates is low-level consistent, that is, that only whole probes are written out, and that internal data structures in the buffer
are not corrupted because the buffer is being concurrently written.
The TNF trace file generated is suitable as input to tnfdump(1), which will generate an ASCII file.
OPTIONS
The following options are supported:
-d dumpfile Uses dumpfile as the system memory image, instead of the running kernel. The dumpfile is normally the path name of a file
generated by the savecore utility.
-n namelist Uses namelist as the file containing the symbol table information for the given dumpfile.
OPERANDS
The following operand is supported:
tnf_file Output file generated by tnfxtract based on kernel trace output from an in-core buffer in the Solaris kernel.
EXAMPLES
Example 1: Extracting probes from a running kernel
Extract probes from the running kernel into ktrace.out:
example% tnfxtract ktrace.out
Example 2: Extracting probes from a kernel crash dump
Extract probes from a kernel crash dump into ktrace.out:
example% tnfxtract -d /var/crash/`uname -n`/vmcore.0
-n /var/crash/`uname -n`/unix.0 ktrace.out
EXIT STATUS
The following exit values are returned:
0 Successful completion.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWtnfc |
+-----------------------------+-----------------------------+
SEE ALSO prex(1), tnfdump(1), savecore(1M), tnf_kernel_probes(4), attributes(5)SunOS 5.10 19 Aug 2003 tnfxtract(1)