Hi Guys !
I am new to unix and want to find out how we can make sql statement data to shell script variable?
Any help/suggestion is greatly appreciated
-Chandra (1 Reply)
Hi
I tried searching but I used to see , this has been answered may times.
But I could not find.
I am looking a SQLPLUS output to be assigned to shell variable.
This is what I coded.
##/bin/ksh
sqlplus dmishr/mishra#09@ps004d.world <<ENDOFSQL
spool abc.log
SET ECHO OFF NEWP... (4 Replies)
Hi all
I run my program prog.c in the following way :
$ ./prog 1 > output.txt where 1 is a user defined initial value used by the program.
But now I want to run it for many a thousand initial values, 1-1000, and store all the outputs in different files.
Like
$ ./prog 1... (1 Reply)
Hi guys
I am calling one DB2 stored proc through unix. It is giving me below output. I want to capture the value 150 in one UNIX variable in shell script. Please let me know how I can achieve this. Thanks in advance
Value of output parameters
--------------------------
Parameter Name :... (5 Replies)
1. The problem statement, all variables and given/known data:
I want to read in a file, and plot the data in matlab. However, I do not like hardwiring filenames into my codes, so I always give the user the option to specify what the filename is. I am pretty inexperienced with matlab, so I have no... (0 Replies)
Hi guys,
I'm new to scripting and I'm wondering if I can run a matlab script from within a bash script.
Basically, at the minute I have a bash script which creates a file "bottfile.xyz"
I then import "bottfile.xyz" into matlab using importdata('bottfile.xyz'). Then I just run the matlab... (0 Replies)
head -n 1 ~/.fvwm/config | grep -c "some-string"
It's the output from grep I need to put into a shell variable.
Also - I appreciate tips for other commands giving the same output. (2 Replies)
I am trying to import a sqlplus output into a shell variable but it doesnt seem to be working.
set -x
export DEPENDENT_CR_NO=`sqlplus -s /nolog <<EOF
conn username/passwd
set heading off
select dependency from custom_patches where patch_name='PATCH.zip';
exit;
EOF`
echo $DEPENDENT_CR_NO
... (2 Replies)
I have some matlab code that sends the serial port elements of an array using matlab's fwrite function, e.g.:
fwrite(s, , 'uchar');
What would be a unix shell equivalent? E.g., after successfully accessing the port using instructions here:
Simple terminal serial port program for Linux/MacOSX... (3 Replies)
So I created two shell variables: COLUMN1_HEADING, COLUMN2_HEADING.
They have values:
COLUMN1_HEADING="John"
COLUMN2_HEADING="123456789"
How would I use printf to get it to print an output like this: $COLUMN1_HEADING\t$COLUMN2_HEADING\nJohn\t123456789\n
Thanks! (3 Replies)
Discussion started by: steezuschrist96
3 Replies
LEARN ABOUT CENTOS
trace-cmd-reset
TRACE-CMD-RESET(1)TRACE-CMD-RESET(1)NAME
trace-cmd-reset - turn off all Ftrace tracing to bring back full performance
SYNOPSIS
trace-cmd reset [OPTIONS]
DESCRIPTION
The trace-cmd(1) reset command turns off all tracing of Ftrace. This will bring back the performance of the system before tracing was
enabled. This is necessary since trace-cmd-record(1), trace-cmd-stop(1) and trace-cmd-extract(1) do not disable the tracer, event after the
data has been pulled from the buffers. The rational is that the user may want to manually enable the tracer with the Ftrace pseudo file
system, or examine other parts of Ftrace to see what trace-cmd did. After the reset command happens, the data in the ring buffer, and the
options that were used are all lost.
OPTIONS -b buffer_size
When the kernel boots, the Ftrace ring buffer is of a minimal size (3 pages per CPU). The first time the tracer is used, the ring
buffer size expands to what it was set for (default 1.4 Megs per CPU).
If no more tracing is to be done, this option allows you to shrink the
ring buffer down to free up available memory.
trace-cmd reset -b 1
SEE ALSO trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-split(1),
trace-cmd-list(1), trace-cmd-listen(1)AUTHOR
Written by Steven Rostedt, <rostedt@goodmis.org[1]>
RESOURCES
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
COPYING
Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).
NOTES
1. rostedt@goodmis.org
mailto:rostedt@goodmis.org
06/11/2014 TRACE-CMD-RESET(1)