cd-to-frequent-directories.sh

# from https://unix.stackexchange.com/a/740187/580914
# add to your .bashrc:

## cdf -- cd to frequent directories
function cdf() {
  # Use awk to extract the directories from the history, using null characters as the separator
  DIRS=$(history | tr '\n' '\0' | awk -v RS='\0' '$2 == "cd" && !/\$DIR/ { $1=""; $2=""; sub("^[[:space:]]*", ""); print }' | grep -v -P -C 5 'cd.*$DIR' | sort | uniq -c | sort -rn | head -n 12 | awk '{$1=""; sub("^[[:space:]]*", ""); print }')

  # Filter out directories that don't exist and parent directories
  VALID_DIRS=()
  while IFS= read -r -d '' DIR; do
    if [ -d "$(eval echo "$DIR")" ] && [[ "$DIR" != ".." && "$DIR" != */.. ]]; then
      VALID_DIRS+=("$DIR")
    fi
  done < <(echo "$DIRS" | tr '\n' '\0' )
  
  if (( ${#VALID_DIRS[@]} == 0 )) ; then
    echo "No directories in history."
    return 1
  fi

  # Use select to create a menu of the directories
  PS3="Choose a directory to cd to: "
  select DIR in "${VALID_DIRS[@]}"; do
    if [ -z "$DIR" ]; then
      echo "Invalid choice."
    else
      cd "$(eval echo "$DIR")" && history -s "cd $DIR" # cd and add the cd command to the history
      break
    fi
  done
}

####
# This is how the output looks like in real life:
#
# ~$ cdf 
#  1) /home/maybit/junk/code/python/django/getting_started
#  2) /home/maybit/Music
#  3) /home/maybit/junk/xwiki/xwiki-platform-distribution-flavor-jetty-hsqldb-15.0-rc-1
#  [...]
# 10) /home/maybit/Downloads
# Choose a directory to cd to: 1
# ~/junk/code/python/django/getting_started$