The Known Public Free DNS Servers
If you can ping an IP but you can’t ping a domain name e.g. the “apt update” doesn’t work, most likely, this is due to inaccessible DNS settings. You …
Tag: linux
How to Exchange Data Between Processes in Linux?
In Linux, there are several ways to exchange data between processes (Inter Process Communication IPC). Here are some of the commonly used methods: Process Sharing/Exchanging Data using Pipes Pipes …
How to Read Parameters from a JSON File in BASH Script?
The parameters can be passed as command line to the shell scripts as $1, $2 etc. However, if there are many parameters, passing via command line is not ideal …
BASH Function to Get Memory Information via AWK
On Linux, we can cat the file “/proc/meminfo” to display memory related information: $ cat /proc/memoinfo MemTotal: 32939372 kB MemFree: 31155452 kB MemAvailable: 31269760 kB Buffers: 242964 kB Cached: …
A Simple BASH Script to Create a File of Given Size
We can use the dd command to generate a file size of given bytes however the parameters are not straighforward. The “if=” specifies the input data (usually from /dev/zero …