What should be my focus areas and the relevant areas (knowledge breakdown)?
Figure 1: What is Shell?
For those times, Bash should work really well.
A faster and simpler way of testing if your connection is up (at least on Linux) is looking at /sys/class/net/NIC/link_mode where NIC is the name of your network card.In our case, ensure ping -c 1 work.Several friends mentioned recently that they wanted to learn Linux and asked whether any books and/or videos I'd recommend.s0 #number of responses recieved f0 #number of failures recieved i0 #IP increment 1 j0 #IP increment 2 # # Pipe Initialization # # # create a pipe for child procs to write to # child procs inherit runtime environment of parent proc, but cannot.There are various types of Shell.Ping -c 1 i ping the current IP address in the variable i once.tmp/atus sleep 1 done, that will write the exit status of ping to /tmp/atus once a second.The final output will look like below. A B means if A condition is met then execute B; if A condition is not met, who will win survivor game changers then dont execute.With /dev/null, you will see the following output, neat and tidy?Ping sweep using Python's netaddr from l import * import netaddr # Define IP range to ping network 24" # make list of addresses out of network, set live host counter addresses netaddr.
Shell interprets the end user commands to allow communication with the operating system kernel (.
dev/null is a dump yard so that unwanted information will not show on the screen.
However, it is a really bad method of checking your connection.
We now test run our bash script.Linux, for example, is a very broad topic.eq 0 compares the ping result return (?) with.Nano is a terminal text editor.Sudo stands for super user do, which allows me to execute commands/tasks with administrative permission.x allows debug mode as below.