#!/usr/bin/env bash

# I want to know what I should automate more.
# List the commands I re-type most often.

EXISTING_SHORTCUTS='abcefhlgrz'

# Annotated:
grep \
  --perl-regexp                 `# Use perl compatible regular expression syntax` \
  --invert-match                `# Show lines that don't match`\
  "^[$EXISTING_SHORTCUTS]( |$)" `# Select lines that don't use an existing shortcut` \
  ~/.bash_history \
  | sort | uniq --count         `# List repeated items by frequency` \
  | sort --numeric-sort         `# Sort by frequency`

# Abbreviated:
# grep -Pv "^[$EXISTING_SHORTCUTS]( |$)" ~/.bash_history | sort | uniq -c | sort -n