--- title: "Harish Gawande (@harishgawande) | Hashnode" description: "Harish Gawande (@harishgawande) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@harishgawande" --- @harishgawande # Harish Gawande @harishgawande · Joined February 2024 ### [Understanding package manager and systemctl](https://harishgawande.hashnode.dev/understanding-package-manager-and-systemctl?utm_source=hashnode&utm_medium=feed) What is a package? A package is usually referred to an application but it could be a GUI application, command line tool or a software library (required by other software programs). A package is essentially an archive file containing the binary execut... 4 min read · [harishgawande.hashnode.dev](https://harishgawande.hashnode.dev/understanding-package-manager-and-systemctl?utm_source=hashnode&utm_medium=feed) [Feb 1, 2024](https://hashnode.com/posts/understanding-package-manager-and-systemctl/65d3711c3848e7251fc58d0f) ### [File Permissions and Access Control Lists](https://harishgawande.hashnode.dev/file-permissions-and-access-control-lists?utm_source=hashnode&utm_medium=feed) In the intricate landscape of Linux and Unix-based systems, file permissions play a pivotal role in ensuring the security and integrity of data. Understanding and effectively managing file permissions is a fundamental skill for any system administrat... 4 min read · [harishgawande.hashnode.dev](https://harishgawande.hashnode.dev/file-permissions-and-access-control-lists?utm_source=hashnode&utm_medium=feed) [Jan 31, 2024](https://hashnode.com/posts/file-permissions-and-access-control-lists/65cc33a8485b9e42310aecca) ### [Advanced Linux Shell Scripting for DevOps Engineers with User management](https://harishgawande.hashnode.dev/advanced-linux-shell-scripting-for-devops-engineers-with-user-management?utm_source=hashnode&utm_medium=feed) Loops (for loop): Execute a block of code repeatedly. #!/bin/bash for i in {1..5}; do echo "Iteration $i" done Example 1 : Write the script, if executed as ./CreateDirectories.sh then it creates 90 directories as day1 day2 day3 .... day90 nano Cr... 9 min read · [harishgawande.hashnode.dev](https://harishgawande.hashnode.dev/advanced-linux-shell-scripting-for-devops-engineers-with-user-management?utm_source=hashnode&utm_medium=feed) [Jan 30, 2024](https://hashnode.com/posts/advanced-linux-shell-scripting-for-devops-engineers-with-user-management/65c92d30eec6abbdd41eb17b) ### [Basic Linux Shell Scripting for DevOps Engineers.](https://harishgawande.hashnode.dev/basic-linux-shell-scripting-for-devops-engineers?utm_source=hashnode&utm_medium=feed) What is Shell ? A shell is special user program which provide an interface to user to use operating system services. Shell accept human readable commands from user and convert them into something which kernel can understand. It is a command language ... 2 min read · [harishgawande.hashnode.dev](https://harishgawande.hashnode.dev/basic-linux-shell-scripting-for-devops-engineers?utm_source=hashnode&utm_medium=feed) [Jan 29, 2024](https://hashnode.com/posts/basic-linux-shell-scripting-for-devops-engineers/65c78564408fea5e8ac3703f) ### [💡Basic Linux Commands](https://harishgawande.hashnode.dev/basic-linux-commands?utm_source=hashnode&utm_medium=feed) Linux, the powerhouse of operating systems, provides a robust and flexible environment for users. Whether you're a seasoned sysadmin or a Linux novice, understanding the basics of Linux commands is fundamental to navigating and managing your system e... 4 min read · [harishgawande.hashnode.dev](https://harishgawande.hashnode.dev/basic-linux-commands?utm_source=hashnode&utm_medium=feed) [Jan 28, 2024](https://hashnode.com/posts/basic-linux-commands/65c770a534df707b0740280e)