Posts Tagged ‘sys-admin’
Python: How to Install and Update pip on Ubuntu
$ sudo apt-get install python-pip python-dev build-essential
$ sudo pip install –upgrade pip
$ sudo pip install –upgrade virtualenv
Windows: Generate a List of Installed Programs
Enter “wmic” (wmic is the Windows Management Instrumentation
Command-line tool) at the command line and press Enter.
NOTE: For more information about WMIC, see Microsoft – Using the Windows Management Instrumentation Command-line (WMIC) tool.
Enter the following line at the wmic:root\cli prompt and press Enter.
/output:C:\Users\jmiller\InstallList.txt product get name,version
NOTE: There is a space between .txt and product, between product and get, and between get and name.
You can also change the name of the output file and drive letter and path (right after /output:) if you want to modify the output location.
The InstallList.txt file is created on the root of the C: drive.
NOTE: Depending on how many programs are installed, you may have to wait a bit for the list of installed programs to be created. You will know that the list is complete when you get the wmic:root\cli prompt again.
When you open the InstallList.txt file in a text editor, you can view the Name and Version of every program installed on your computer in a nice table.
Quick Tip: IPTables port forwarding in 1 Line
iptables -A PREROUTING -t nat -p tcp -i eth0 –dport 88 -j DNAT –to 192.168.1.2:22
Quick Tip: Erase a drive (insecurely) in 1 Line
sudo dd if=/dev/zero of=/dev/sdx bs=512 count=1
Quick Tip: How to Free Up Resources for Big Data Scripts in Linux by Checking Processes, Killing Duplicates, Tailing Log
ps -efsudo kill -2600 1982 999
tail -f myscript.log
Optionally filter the process list by changing the first command to:
ps -ef | grep -i keyword