lazygit

(Terminal UI for Git written in Go)

Bat

(“A cat clone with wings”)

Syntax highlighting…

…in a huge number of languages. See the impressive list with:

bat -L

cat /home/marie/parvus/prog/slides/static/files/tools/julia.jl

Syntax highlighting…

…in a huge number of languages. See the impressive list with:

bat -L

bat /home/marie/parvus/prog/slides/static/files/tools/julia.jl

Smart behaviour with pager

Uses less by default with options -RFX

Very convenient: quits the pager automatically if the entire content fits on one script

Integration with Git

Git diff

bat -d

Man page syntax highlighting

Even colourizes your man pages if you set the MANPAGER environment variable (e.g. in your .bashrc):

export MANPAGER="sh -c 'col -bx | bat -l man -p'"

Useful flags

bat -n              # Remove frame

bat -p              # Remove frame & line numbers

I personally have an alias for this: alias rat='bat -p'

bat -pp             # Remove frame & line numbers & don't use pager

bat -f              # Keep colour highlighting after piping

I made this the default behaviour for bat with the alias: alias bat='bat -f'

Fully customizable

The defaults are great, but if they don’t suit you, you can change tab width, language, wrapping method…

bat --config-file             # Location of config file (if it exists)

bat --generate-config-file    # Create config file template

bat --list-themes             # List themes with examples

ripgrep

(A fast recursive alternative to grep)

Syntax

The syntax is similar to that of grep

Because, by default, rg is recursive (grep isn’t) & ignores some files, rg -uuu is equivalent to grep -r

Benchmarks

I will compare grep and rg to recursively search the word “Unix” in my directory “~/parvus/prog/tcl”

grep -r Unix ~/parvus/prog/tcl
rg Unix ~/parvus/prog/tcl

I will do a cold test (clearing my computer cache before each run) using hyperfine

hyperfine -i --prepare 'sync; echo 3 | sudo tee /proc/sys/vm/drop_caches' \
		  'grep -r Unix ~/parvus/prog/tcl' \
		  'rg Unix ~/parvus/prog/tcl'

Results

Benchmark 1: grep -r Unix ~/parvus/prog/tcl
Time (mean ± σ):      1.027 s ±  0.016 s  [User: 0.269 s, System: 0.222 s]
Range (min … max):    1.007 s …  1.052 s  10 runs

Benchmark 2: rg Unix ~/parvus/prog/tcl
Time (mean ± σ):      76.0 ms ±   5.6 ms  [User: 21.5 ms, System: 29.6 ms]
Range (min … max):    63.0 ms …  82.4 ms  10 runs

Summary
'rg Unix ~/parvus/prog/tcl' ran
13.51 ± 1.02 times faster than 'grep -r Unix ~/parvus/prog/tcl'

What makes rg fast?

fd

(Fast & friendly alternative to find)

pass

(A command line password manager for Unix systems)

Main pass commands

pass init your-gpg-id                    # Initialize password store
pass insert somesite.ca/your@email       # Enter password for a site
pass somesite.ca/your@email              # Print password
pass -c somesite.ca/your@email           # Copy password to clipboard
pass edit somesite.ca/your@email         # Edit password
pass generate othersite.com/userid 12    # Generate password of size 12
pass generate -c othersite.com/userid 12 # Same, but copy to clipboard
pass generate -n othersite.com/userid 12 # Same, without special characters
pass rm othersite.com/userid             # Delete password
pass                                     # Print content of password store

TRAMP

(“A remote file editing package for Emacs”)

Using TRAMP from within Emacs

Remote file

C-x C-f /ssh:user@server:/home/user/path/to/file RET

Root

C-x C-f /sudo::/path/to/file RET

Using TRAMP from the command line

Remote file

emacs /ssh:user@server:/home/user/path/to/file

Root

emacs /sudo::/path/to/file

Helm

(“Incremental completion & selection narrowing framework”)

Grep equivalent

Navigate mark ring

Navigate kill ring

Navigate open & recent files

Navigate recent files

Find file

Locate

Search objects in working environment

Search in Git repo

Manage major/minor modes

Search help files

Search key bindings

Search in emails

Select colour

Select emoji

Questions?