The ps command on Linux is very useful for listing running processes. It is possible to list only certain running processes. And also certain columns of text from the output. This could be very useful for a script. This example below shows how to only print the PID, the percentage of CPU and the command … Read more
The sudo systemctl status command will show a tree view of all running processes on your Linux machine. This is quite comprehensive and very useful output. Here is a sample. 4.4 Mon Mar 04 jason@Yog-Sothoth 1: $ sudo systemctl status ● Yog-Sothoth State: running Jobs: 0 queued Failed: 0 units Since: Mon 2019-03-04 18:52:58 AEDT; … Read more
There is a simple way to dump the contents of a virtual console to a file, the screendump command is the best way to achieve this. ubuntu ~ $ sudo screendump Ubunt * Stopping System V runlevel compatibility [ OK ] u 14.0 * Starting execute cloud user/final scripts [ OK ]4 .4 LTS ip-172-18-31-5 … Read more
Embedding the output of a command into a bash shell script is quite easy. Here is an example. echo "Hello $(whoami), the date is $(date -u). Have a nice day"echo "Hello $(whoami), the date is $(date -u). Have a nice day" This is the output this will give you. ┌─[jason@neo]─[~] └──╼ $echo "Hello $(whoami), the … Read more
Get network information on Windows with netstat Netstat on Windows can provide a lot of information about your network connection. This example shows netstat showing Ethernet statistics. c:\Windows\System>netstat -e Interface Statistics Received Sent Bytes 2307072092 27407417 Unicast packets 1757202 320154 Non-unicast packets 0 0 Discards 0 0 Errors 0 0 Unknown protocols 0c:\Windows\System>netstat … Read more
This Java code displays a list of students and their scores and also displays a list of their names in alphabetical order. Use this command to compile this: gcj –main=Employees Employees.java -o hello. /* * My first Java program. * */ import java.util.Arrays; public class Employees { public static void main(String[] args) … Read more
Below we see output of the ls command when listing a directory. The –color=auto parameter allows the use of color if your terminal supports it. And since everyone either uses Konsole or Gnome Terminal; this command will always work. I am using zsh at the moment; but this works with just about any shell. ls … Read more