Working on the Linux command line: How to bash `cd` with autocorrect
There is an option you can set so that when using the cd command, small typos are automatically corrected. Add the following to your ~/.bashrc:
# cd: autocorrect small typos and use best guess
shopt -s cdspell
Example:
cd Porjects
# Projects
pwd
# /home/judith/Projects
Also, I recommend adding aliases for your most common typos of commands you regularly use to your ~/bashrc. Which ones that are is highly personal, for me it's e.g. tig:
alias tog='tig'
alias tug='tig'
Related cards:
Working on the Linux command line: How to use bookmarks for directories
Bookmarks for directories will be most helpful if you are forced to work in deeply nested projects. Then it's really helpful!
This makes use of the CDPATH variable. Similar to the PATH variable, which holds the list of directories which are s...
Working on the Linux command line: How to efficiently navigate up
With cd .. you can navigate one directory up from the one you are at now. If you use that a lot, consider some handy aliases.
Add the following lines to your ~/.bashrc:
alias ..="cd .."
alias ...="cd ../.."
alias ....="cd ../../.."
alias ...
Working on the Linux command line: Use the `tree` command instead of repeated `cd` and `ls`
The tree command will show you the contents of a directory and all it's sub directories as a tree:
>tree
.
├── a
│ ├── file_1.txt
│ └── file_2.txt
└── b
├── c
│ └── even_more.txt
└── more.txt
3 directories, 4 files
I...
How to view Image Metadata on the Linux Command Line with ImageMagick
ImageMagick has a command line tool called identify which can read image metadata:
>identify -verbose DSC00136.JPG
Image: DSC00136.JPG
Format: JPEG (Joint Photographic Experts Group JFIF format)
Class: DirectClass
Geometry: 5472x3648+...
How to use the Capistrano 2 shell to execute commands on servers
Capistrano 2 brings the shell command which allows you to run commands on your deployment targets.
There is also invoke to run a command directly from your terminal.
Both commands allow running Capistrano tasks or shell commands, and scope to...
How to: Upgrade CarrierWave to 3.x
While upgrading CarrierWave from version 0.11.x to 3.x, we encountered some very nasty fails. Below are the basic changes you need to perform and some behavior you may eventually run into when upgrading your application. This aims to save you some...
Linux: How to print PDF files from the command line
Sometimes you may want to print files from the command line, especially when you have lots of them.
You can use lp for that.
To print a single example.pdf file on your default printer, simply say:
lp example.pdf
lp accepts multipl...
Manage Linux services on the command line (Ubuntu)
Ubuntu 18.04 uses systemd to manage services.
There are basically two commands for listing all services and manipulating the state of a certain service: service and systemctl:
-
servicemanages System V init scripts -
systemctlcontrol...
Invoices: How to properly round and calculate totals
While it might seem trivial to implement an invoice that sums up items and shows net, gross and vat totals, it actually involves a lot of rules and caveats. It is very easy to create invoices where numbers don't add up and a few cents are missing....
Lightning Talk: Coverage based Test Case Prioritization in Ruby on Rails
For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra. It has been written as a Ruby Gem and was tested and evaluated against one Ruby on Rails project....