minimalistic bashfilebrowser which enables 4-button navigation. Highly customizable/configurable for all needs.

nbrowser

#!/bin/bash 
#
# minimalistic filebrowser script which enables 4-button navigation.
#
# Why: I needed a simple way to navigate thru files using simple keyboardbindings.
#
# Usage:
#         nbrowser next dir
#         nbrowser next file
#         nbrowser prev dir
#         nbrowser prev file
#         nbrowser getfile
#         nbrowser getfiles
#         nbrowser getsubdir 
#         nbrowser getsubdirs
#         nbrowser show
#
# File/dir info is saved in /tmp/.nbrowser*, remove them in case of trouble
#
# changes:
#          [Thu Nov 15 21:18:27 CET 2012] added cachefiles to speed up laaaarge dirs
#
# Copyright (C) 2012, Leon van Kammen, Coder of Salvation 
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
# 
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

path="/home/sqz/.wine/drive_c/Program Files/buze/Gear/Vst"
dbfile="/tmp/.nbrowser.$(basename "$path")"
cachefiles="$dbfile.cache"
cachedirs="$dbfile.cachedirs"
showallfiles=1                # subdirectories show all their subdirectories contents
showfiletypes="(\.dll|\.DLL)" # leave empty for all files
cache=""
dbinit='
offset_dir=1
offset_file=1
size_file=0
size_dir=0
'
init(){
  if [[ ! -f "$dbfile" ]]; then 
    echo "$dbinit" > "$dbfile"; 
    update file
    update dir
  fi
}

update(){
  [[ "$1" == "file"  ]] && max=$(getfiles | wc -l)
  [[ "$1" == "file"  ]] && updatevar "offset_file" 1
  [[ "$1" == "dir" ]] && max=$(getsubdirs "$path" | wc -l)
  [[ "$1" == "dir" ]] && : > "$dbfile.cache" && getfiles &>/dev/null # update cache
  updatevar "size_$1" "$max"
}

updatevar(){
  var="$1"
  value="$2"
  sed -i 's/'$var'=.*/'$var'='$value'/g' "$dbfile"
}

prev(){
  label="offset_$1"
  size=$(grep "size_$1" "$dbfile" | sed 's/.*'$1'=//g')
  offset=$(grep "$label" "$dbfile" | sed 's/'$label'=//g')
  ((offset=offset-1))
  [[ "$offset" == "0" ]] && offset=$size
  updatevar "$label" "$offset"
  [[ "$1" == "dir" ]] && update dir && update file && getsubdir  # update file amount for speed
  [[ "$1" == "file" ]] && getfile
}

next(){
  offset=$(grep "offset_$1" "$dbfile" | sed 's/.*'$1'=//g')
  size=$(grep "size_$1" "$dbfile" | sed 's/.*'$1'=//g')
  [[ "$size" -gt "$offset" ]] && ((offset++)) || offset=1;
  updatevar "offset_$1" "$offset"
  [[ "$1" == "dir" ]] && update dir && update file && getsubdir  # update file amount for speed
  [[ "$1" == "file" ]] && getfile
}

getsubdir(){
  offset_dir=$(grep "offset_dir" "$dbfile" | sed 's/offset_dir=//g')
  getsubdirs | sed $offset_dir'q;d'
}

getsubdirs(){
  cache=$( cat "$cachedirs" 2>/dev/null)
  [[ ${#cache} > 0 ]] && echo "$cache" && return 0;
  echo "$path/." > "$cachedirs"
  find -L "$path" -mindepth 1 -maxdepth 1 -type d | while read dir; do 
    ls "$dir" | grep -q -E "$showfiletypes" && echo "$dir" >> "$cachedirs"
  done
  cat "$cachedirs"
}

getfiles(){
  cache=$( cat "$cachefiles" 2>/dev/null)
  [[ ${#cache} > 0 ]] && echo "$cache" && return 0;
  if [[ $showallfiles == 1 ]]; then 
    find -L "$(getsubdir)" 2>/dev/null| grep -E "$showfiletypes" > "$cachefiles"
  else
    find -L "$(getsubdir)" -mindepth 1 -maxdepth 1 2>/dev/null| grep -E "$showfiletypes" > "$cachefiles"
  fi
  cat "$cachefiles"
}

getfile(){
  offset_file=$(grep "offset_file" "$dbfile" | sed 's/offset_file=//g')
  files=$(getfiles)
  lines=$(echo "$files" | wc -l)
  if [[ $lines < 2 ]]; then echo "$files"; 
  else getfiles | sed $offset_file'q;d'; fi
}

show(){
  file=$(getfile)
  msg="$(echo $(getsubdir) | sed 's/.*\///g') ::: "
  [[ ${#file} > 0 ]] && msg="$msg "$(basename "$file")""
  echo $msg;
  #DISPLAY=:0.0 notify-send "$msg"
}

init
"$@"