Linux – Install java and javac on RedHat Linux
Install java and javac on RedHat Linux To install java and the java compiler on RedHat Linux, it is required to installed a couple of packages using yum. As root, or sudo as a privileged…
Linux
Linux – Oracle – Display Environment Variables Associated to a Process
Find the process id – Example : Oracle Listener Display the Environment Variables
Linux – Red Hat Linux – display system reboot
Red Hat Linux – display system reboot who -b uptime
Oracle – Direct NFS with a Windows NFS Server
Scenario : Oracle Direct NFS, NFS on Windows Server you are using Oracle Direct NFS, and the NFS is running on Windows, there is a potential issue with permissions and ownership changes required. Example An…
Linux – tcpdump capture network packets
tcpdump tcpdump is a Linux program that can be used to capture network traffic to and from a Linux server and it’s clients. It is well-docmented and needs no further description. This post just describes…
Linux – install hstr for hh command recall
yum install gcc yum install readline-devel yum install ncurses-devel ncurses wget https://github.com/dvorka/hstr/releases/download/1.10/hh-1.10-src.tgz tar xf hh-1.10-src.tgz cd hstr ./configure && make && sudo make install
Linux – close file descriptors without killing process
— get list of file descriptors # lsof /dev/mapper/XYZ_* — example output oracle 31814 oracle 256u BLK 253,7 0t0 20968 /dev/mapper/../dm-7 — above, fd 256 is open for update (could also be w (write)) –…
Linux – Run remote Powershell from Nagios – nrpe_check
I experienced a strange problem when calling Powershell from nagios to check failover cluster status. Note – using old NRPE_NT nagios agent – no problem with NSClient++. The Get-Cluster cmdlet failed each time the script…
SQL Server/Linux – Install SQL Server 2017 on Linux
Microsoft document: Install SQL Server on Linux [root@oralintest ~]# curl -o /etc/yum.repos.d/mssql-server.repo https://packages.microsoft.com/config/rhel/7/mssql-server.repo [root@oralintest ~]# yum install mssql-server … Installed: mssql-server.x86_64 0:14.0.900.75-1 Complete! [root@oralintest ~]# /opt/mssql/bin/mssql-conf setup The license terms for this product can be…
Linux – Display Physical Sockets
cat /proc/cpuinfo | grep “physical id” | sort -u