tcpdump : Linux Network Sniffer Tool

tcpdump: Linux Network Sniffer Tool tcpdump is a most powerful and widely used command-line packets sniffer or package analyzer tool which is used to capture or filter TCP/IP packets that are received or transferred over a network on a specific interface. It is available under most of the Linux/Unix-based operating systems. tcpdump also gives us an option to save captured … Read more

nmcli – Linux command

nmcli – Linux command nmcli, the network manager command-line interface is a nifty and easy to use tool that saves you lots of time when you need to configure an IP address. To display all the active network interfaces on your Linux system execute the command. $ nmcli connection show OR $ nmcli con show Note that con is … Read more

find command in Linux

find command in Linux The find command in UNIX or Linux is one of the most important and frequently used command. It’s a command-line utility for walking a file hierarchy. It can be used to find files and directories and perform subsequent operations on them. It supports searching by file, folder, name, creation date, modification date, owner, and … Read more

ls -lt command

ls -lt command ls -lt: Sorting the Formatted listing by time modification Usages: # ls -lt Output: total 160 drwxr-xr-x 2 root root 4096 Oct 22 2019 test2 -rw-r–r– 1 root root 5142 Oct 3 2019 ps1.txt -rw-r–r– 1 root root 4893 Sep 23 2019 test2.php drwxr-xr-x 2 root root 4096 Sep 13 2019 ivr -rw-r–r– 1 root … Read more

ls -al command

ls -al command ls -al : Formatted listing with hidden files. Usages: # ls -al Output list of all directories or files in the current directory. This also includes hidden files. # ls -al /root Output list of all directories or files in the /root directory. This also includes hidden files.

dirname command

dirname Command dirname is mostly used in situations where you need to strip the last component from an absolute file name. used to remove the trailing forward slashes “/” from the NAME and prints the remaining portion. If the argument NAME does not contain the forward-slash “/” then it simply prints dot “.”. Example: # dirname /home/example/foo/ output: /home/example # dirname foo/file.txt output: foo … Read more

Rsync: Theoretical mathematics and algorithm

Rsync: Theoretical mathematics and algorithm This article is excellent for understanding theoretical mathematics and some of the mechanics of the rsync algorithm. Unfortunately, they are more about the theory than the implementation of the rsync utility. rsync is an open-source utility that provides fast incremental file transfer. rsync is freely available under the GNU General Public License and is … Read more

install Brave Browser

sudo apt install apt-transport-https curl gnupg curl -s https://brave-browser-apt-release.s3.brave.com/brave-core.asc | sudo apt-key –keyring /etc/apt/trusted.gpg.d/brave-browser-release.gpg add – echo “deb [arch=amd64] https://brave-browser-apt-release.s3.brave.com/ stable main” | sudo tee /etc/apt/sources.list.d/brave-browser-release.list sudo apt update sudo apt install brave-browser