Using exa as a modern replacement to the venerable Unix ls command
So you know
ls (often found as
/bin/ls), the good old Unix command to list files in a directory.
I recently came across exa, a modern replacement for
ls. It is part of a wave of new command-line tools written in Rust and that bring modernity while staying faithful to the Unix way of writing focused and composable tools.
Of course you may wonder why switching from
ls is any good idea. It turns out that
exa is really a better
ls, with good colour support, customisable output, a humane interface and even
git metadata support (so you can see which files are being ignored, staged, etc).
A quick tour of exa
The default behavior of
exa is to… list files, pretty much like
ls would do:
The equivalent of
ls -la is
exa --long --all:
Note that by default file sizes are given in a human-friendly form.
If you are in a Git repository you can also get metadata by adding the
--git flag to any command:
Note that reading Git metadata can slow down the execution of
exa commands, so I personally tend to use the
--git flag only when I actually need it.
You can also inspect trees with the
There is also a
--recurse flag to list files in each directory of the file tree:
My personal aliases
exa instead of
ls is one more character, and you’ll likely have to fight muscle memory. In my case I am trying to get rid of typing
ls -lsa 😉
You can easily define a few aliases so
exa becomes your new
ls. Note that
exa is not fully compatible with
ls. For instance
ls -lsa (which I am fighting) results in an error with
exa -lsa because the
-s flag requires an argument to define a sort field.
Here are my personal aliases:
# A few aliases for exa, a ls replacement alias l="exa --sort Name" alias ll="exa --sort Name --long" alias la="exa --sort Name --long --all" alias lr="exa --sort Name --long --recurse" alias lra="exa --sort Name --long --recurse --all" alias lt="exa --sort Name --long --tree" alias lta="exa --sort Name --long --tree --all" alias ls="exa --sort Name"
Feel-free to take inspiration and define aliases and default flags that make sense to you!