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nixCraft Linux / UNIX Newsletter |
| Linux: How To Encrypt And Decrypt Files With A Password Posted: 30 Nov 2020 03:50 AM PST {Updated} Where security is critical, we use strong encryption such as Pretty Good Privacy/GNU PGP instead of the relatively weak standard encryption provided by many CLI utilties. Let us see how to encrypt and decrypt files on Linux and Unix command-line. The post Linux: How To Encrypt And Decrypt Files With A Password appeared first on nixCraft. |
| How to convert pdf to image on Linux command line Posted: 30 Nov 2020 02:39 AM PST I have many PDF files, and I need to convert them to a png file format, add a border to those images, and convert back all those images to pdf format. How can I convert pdf to image format on Linux and vice versa using the CLI? The post How to convert pdf to image on Linux command line appeared first on nixCraft. |
| Ubuntu 20.04 LTS change hostname permanently Posted: 29 Nov 2020 11:55 AM PST {Updated} Iam a brand-new Ubuntu Linux 20.04 LTS VM user. By default, my server name to 'localhost' during cloud installation, but now I would like to change the computer name to 'ubuntu-2004-nixcraft'. Can you tell me how do I remove the localhost and set it to ubuntu-2004-nixcraft on Ubuntu 20.04 Linux? How do I change the Ubuntu computer name from 'localhost' to 'ubuntu-2004-nixcraft'? Can you tell me more about Ubuntu Linux change hostname command? The post Ubuntu 20.04 LTS change hostname permanently appeared first on nixCraft. |
| How To Use Bash Parameter Substitution Like A Pro Posted: 29 Nov 2020 11:50 AM PST {Updated} The $ character is used for parameter expansion, arithmetic expansion and command substitution. You can use it for manipulating and expanding variables on demands without using external commands such as perl, python, sed or awk. This guide shows you how to use parameter expansion modifiers to transform Bash shell variables for your scripting needs. The post How To Use Bash Parameter Substitution Like A Pro appeared first on nixCraft. |
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