Vim HowTo - Linux / Unix Q & A from nixCraft

How to open a file in vim in read-only mode on Linux/Unix

in BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, Linux, Suse, UNIX, Vim last updated June 29, 2017

I need of opening necessary files in reading (read-only) mode to avoid accidental editing of files such as /etc/resolv.conf or a large config or programming file on a production server. How do I open files in read-only mode in vim text editor on Linux or Unix-like system?

Linux / Unix: Colored Man Pages With less Command

in BASH Shell, Linux, UNIX last updated December 13, 2017

How do I see colored man pages with standard Unix or Linux less command without installing most paging program for Unix / Linux like operating system?

VI / VIM: Insert Current Date / Time

in Linux, UNIX, Vim last updated November 17, 2010

How do I display and insert current date and/or time under vi or VIM text editor?

vi / vim: Jump To End Of File Command

in Linux, UNIX, Vim last updated August 14, 2013

I‘m using vim as a text editor and editing a large code file written in python. How do I jump to end of file using vim text editor under Apple Mac OS X Unix operating systems?

How To Save A File In Vim / Vi Without Root Permission With sudo

in CentOS, Debian / Ubuntu, FreeBSD, Linux, Suse, UNIX, Vim last updated September 26, 2017

This happens lot of times. I login as a normal user and start to edit httpd.conf or lighttpd.conf or named.conf in vim / vi text editor. However, I’m not able to save changes due to permission issue (all config files are owned by root). How do I save file without creating a temporary file (/tmp/httpd.conf) and then move the same (mv /tmp/httpd.conf /etc/httpd) as root using vim / vi itself?