Linux help, shell scripts, python scripts
Admin Block devices are non volatile storage devices whose information can be accessed in any order. Hard disks, floppy disks, and CD-ROMs are examples of block devices. Block device reads from and writes to the device in blocks of different sizes. With block device as a hard disk we can read and write one block of … Read more
In most of the Linux distributions we have bg (background) command. It is used to resume the jobs suspended or stopped in background in the server. In bg command we have very few options or examples to remember. First of all before displaying the background jobs in the foreground let me explain how those jobs … Read more
bc is a command line utility in Linux distributions which can perform arbitrary precision calculations. In this article we will discuss bc command all options with examples in Linux. With bc command we can do simple to complex calculations in Linux distributions. bc is a language that supports arbitrary precision numbers with interactive execution of … Read more
In Linux distributions we can schedule jobs in two different ways. One is using crontab and second is scheduling using at command. Main difference between crontab and at commands are by using crontab we can schedule the recurring jobs and using at command we can schedule one time jobs at particular time period. In this … Read more
Bash is a Unix shell and command language written by Brian Fox for the GNU Project as a free software replacement for the Bourne shell. First released in 1989. It has been used as the default login shell for most Linux distributions. Bash was one of the first programs Linus Torvalds ported to Linux, alongside … Read more
Every file in Linux contains a path to mention where it belongs to. The path structure is /root/test_file.txt something like this. In this path /root is the directory where the file test_file.txt is resides. If you want to refer to this file in Linux use the full path as /root/test_file.txt. Regarding file path we have … Read more
Base32 is the set of 32 bits numeral system and each bit can be represented by 5 bits. To represent base32 numbers in human-readable format is by using the standard 32-character set containing 22 uppercase alphabets and 0 to 9 digits. The resulting base32 character set can be used as files names as it cannot … Read more
b2sum command is a utility to check the BLAKE2 checksum. BLAKE2 is a cryptographic hash function which is faster than MD5, SHA-1, SHA-2, and SHA-3 and is secure than the SHA-3. BLAKE2 has the features of high speed, security and simplicity. BLAKE2 is available in two flavors. BLAKE2b (which is BLAKE2) – It is optimized … Read more
What is alias command: alias command as the name suggests used to create shortcuts for commands in Linux. With creating aliases to the commands we can use alias name instead of the actual command. It is very easy to remember alias names instead of actual command. What are the uses of alias command: Alias for … Read more
du (disk usage) command in Linux is used to check the disk usage for files and directories. It has more options to work with disk usage check for files and directories. I had written a detailed article about du (disk usage) command examples in below article. Please check it to learn more about every option … Read more