Linux Installing and Uninstalling RPM Packages
| Posted by watashii | Filed under Unix
Installing a package on Linux: (Eg, MQSeriesRuntime-7.0.1-3.x86_64.rpm)
$ rpm -ivh MQSeriesRuntime-7.0.1-3.x86_64.rpm
Verify the package installed: (The architecture x86_64 name is not required)
$ rpm -qa MQSeriesRuntime-7.0.1-3
Uninstall the package:
$ rpm -e MQSeriesRuntime-7.0.1-3
Note: Sudo maybe required for install, in this case, run sudo rpm …
Oracle SQLPlus Query Output to a File
| Posted by watashii | Filed under Database, Programming, Unix
Here is a simple way to output SQL query output into a file, via command line based SQLPlus.
Step 1: Nominate the output file location. In this case this is a Unix location.
SQL> spool /tmp/output.txt
Step 2: Perform your SQL query.
SQL> select * from tab;
Step 3: Close the file.
SQL> spool off
Tip: Use set lines statement to adjust output display
Tags: log, oracle, sql, sqlplus, unix
Install & Uninstall Probes/Gateways on Netcool Omnibus
| Posted by watashii | Filed under Software, Unix
Installing probes & gateway for Netcool/Omnibus 7.2 and below (ie prior to 7.3) is done by using the nco_patch patch tool over an existing Netcool Omnibus installation, with the un-tarred path of the patch (Unix):
$ $NCHOME/omnibus/install/nco_patch -install /tmp/probe-nco-p-mttrapd-9_0/patch/probe-nco-p-mttrapd-9_0/
To list all the patch (ids) that has been already applied to the installation, run the following command:
$ $NCHOME/omnibus/install/nco_patch -print=id
gateway-nco-g-oracle-4_0
gateway-nco-g-remedy-8_0
probe-nco-p-mttrapd-9_0
To remove/uninstall the probe, we use the same nco_patch tool with the patch id :
$ $NCHOME/omnibus/install/nco_patch -remove probe-nco-p-mttrapd-9_0
Tags: netcool, omnibus, probes, tivoli
Starting / Shutdown Oracle Database in Unix
| Posted by watashii | Filed under Database, Unix
This simple guide to shows how to start /stop your Oracle database from Unix. You must have logon access to do this.
Step 1
Unix login as oracle (usually the user that installed the database)
Step 2
Make sure your environment variables are set, eg:
ORACLE_SID=MYDBSID
ORACLE_BASE=/opt/oracle
ORACLE_HOME=/opt/oracle/product/11.2.0/dbhome_1
LD_LIBRARY_PATH=/opt/oracle/product/11.2.0/dbhome_1/lib
PATH=/usr/bin:/usr/sbin:/usr/ucb:/usr/local:/usr/local/bin:/usr/local/sbin:/opt/oracle/product/11.2.0/dbhome_1/binStep 3 – Start DB Instance
On the Unix command line, run sqlplus with sysdba, and simply type startup in the prompt to start it up.
oracle@db-srv-01 % sqlplus '/ as sysdba'
SQL*Plus: Release 11.2.0.1.0 Production on Tue Nov 30 12:06:47 2010
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 3207790592 bytes
Fixed Size 2152368 bytes
Variable Size 2449475664 bytes
Database Buffers 738197504 bytes
Redo Buffers 17965056 bytes
Database mounted.
Database opened.Step 4 – Start Listener
To start the oracle listener (assuming listener.ora is setup), run lsnrctl start
oracle@db-srv-01 % lsnrctl start
LSNRCTL for Solaris: Version 11.2.0.1.0 - Production on 30-NOV-2010 12:00:34
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Starting /opt/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...
TNSLSNR for Solaris: Version 11.2.0.1.0 - Production
System parameter file is /opt/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /opt/oracle/diag/tnslsnr/db-srv-01/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=db-srv-01)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=db-srv-01)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Solaris: Version 11.2.0.1.0 - Production
Start Date 30-NOV-2010 12:00:35
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/db-srv-01/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=db-srv-01)(PORT=1521)))
The listener supports no services
The command completed successfullyStep 4 – Shutdown
Similarly, to shutdown the instance, type shudown normal within sqlplus.
Stop the listener, by running lsnrctl stop
Tags: Database, oracle, shutdown, startup, unix
Unix Bash Coloured Prompts
| Posted by watashii | Filed under Unix
To display coloured prompts upon user login (on Unix Bash shell, PuTTY client), perform the following modifications:
- Unix login and open the user’s profile in the home directory, eg /home/username/.profile
- In the .profile, add the following entry in a new line to execute the bash shell upon login, eg /usr/bin/bash
- The bash shell will refer to a .bashrc file. If its not there, create it, eg /home/username/.bashrc
- Add following entries in the .bashrc to enable the coloured prompt; showing the username, hostname and working directory:
# Colored Prompts
STARTGREEN='\[\e[0;32m\]';
STARTBLUE='\[\e[1;34m\]';
ENDCOLOR="\[\e[0m\]";
PS1="$STARTGREEN\u@\h$ENDCOLOR:$STARTBLUE\w$ENDCOLOR $ ";
Tags: bash, bashrc, color, profile, prompt
Unix Shell – Check If Directory Is Empty
| Posted by watashii | Filed under Programming, Unix
Here is a simple unix shell command to check if a directory, $dir, is empty.
export $dir=/tmp/myfiles/
if [ "$(ls -A $dir)" ];
then
echo "$dir NOT Empty";
else
echo "$dir IS Empty";
fi
Tags: directory, empty, shell, unix
Unix LS Command With Colors… Without the —color Option
| Posted by watashii | Filed under Programming, Unix
Having command line text in colors makes things easier to read. For example the ls command for listing directories and files. In some Unix environments, the ls command may not support the –color option to let us do that (as it requires GNU ls). So how can we workaround this to add color to ls?
Here are my steps to make it happen. Note i’m no Unix guru, and I didn’t have time to perfect it.. but it gets the job done!
BIAR File Command Line Import – Bypassing Import Wizard
| Posted by watashii | Filed under BusinessObjects, Software, UnixThe command line to import the BusinessObjects Enterprise (XIR2 Unix) exported biar file can be done using the following command:
java -jar <BOBJE_HOME>/bobje/java/lib/InstallEntSdkWrapper.jar 'cms_name' 'admininistrator' 'admin_password' 'secEnterprise' <PATH_TO>/MyBiarFile.biar
[InstallEntSdkWrapper.main] Connecting to CMS Development as administrator
[InstallEntSdkWrapper.main] BIAR Imported SuccessfullyTags: biar, BusinessObjects, import wizard
How to untar a gz file in Unix
| Posted by watashii | Filed under Unix
For a .gz file,
$ gunzip myfile.gz
For .tar.gz file,
$ gzip -dc myfile.tar.gz | tar xvf -
Tags: unix untar gz file
Exercise Your Idle System Doing Nothing
| Posted by watashii | Filed under Unix
Via Unix/Linux:
cat /dev/zero > /dev/nullor
cp /dev/zero /dev/nullExplaination:
/dev/null is basically a black hole (a special null file), anything written to it goes down the drain. Anything read from it will result in nothing returned. /dev/zero is basically the same as /dev/null when writing to it, however reading it will result in a continuous stream of zeros without EOF.
Tags: null, performance, unix, zero
