iankelling.org Git - small-misc-bash/blob - ll-function

   1 #!/bin/bash
   2 # Copyright (C) 2014 Ian Kelling
   3
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at
   7
   8 #     http://www.apache.org/licenses/LICENSE-2.0
   9
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15
  16
  17 # ls -lA with enhanced output
  18 # octal permissions
  19 # omited acl type specifier
  20 # better hard link count: number of subdirectories or number of linked files or omitted if 0
  21 # better human readable size
  22 # more natural date/time format for my American raised eyes
  23 ll() {
  24     local x y z q perm padding line binls sizePadding middle tail size
  25     local -a lines
  26     binls=$(type -P ls)
  27     local first=true
  28     local aclchar=false
  29     # there's no way to tell if ls uses the acl specifier unless we loop over the data twice
  30     # the 11th char is either
  31     #  . for selinux context
  32     #  + for any other kind of acl
  33     #  or blank for no other kind of acl
  34     #  I don't want to see this generally.
  35     while read line; do
  36         if $first; then
  37             first=false
  38         else
  39             # if we did want the first line, it would need to be stripped of non-printing chars:
  40             # line=${line#$'\E[00m'}
  41             lines+=("$line")
  42             [[ ! ${line:10:1} == " " ]] && aclchar=true
  43         fi
  44     done< <( "$binls" -lAh --color=always "--time-style=+%m-%d     %Y
  45 %m-%d %I:%M %P" "$@" )
  46     for line in "${lines[@]}"; do
  47         if ! [[ $line == [-dscbl][-r][-w][-xsS][-r][-w][-xsS][-r][-w][-xtT]* ]]; then
  48             printf "%s\n" "$line"
  49         else
  50             perm=0
  51             for (( x=0; x<=8; x++ )); do
  52                 y=${line:$(( -1*x + 9 )):1}
  53                 [[ $y == [tT] ]] && perm=$(( perm + 512 ))
  54                 if [[ $y == [sS] ]]; then
  55                     [[ $x == 3 ]] && perm=$(( perm + 1024 ))
  56                     [[ $x == 6 ]] && perm=$(( perm + 2048 ))
  57                 fi
  58                 [[ $y != [-ST] ]] && perm=$(( perm + 2**x ))
  59             done
  60             if $aclchar; then
  61                 y="${line:11}"
  62             else
  63                 y="${line:10}"
  64             fi
  65             initial_space="${y%%[![:space:]]*}"
  66             hardLinks="${y#$initial_space}" # remove any initial spaces
  67             hardLinks="${hardLinks%%[[:space:]]*}" # remove everything beyond first word
  68             hardLink_spacing=$(( ${#initial_space} + ${#hardLinks} )) # length of hardlink string including padding
  69             middle=${y#*[^ ]* }
  70             size=${middle#*[^ ]* *[^ ]* }
  71             middle=${middle%"$size"}
  72             tail=${size#*[^ ]* }
  73             size=${size%"$tail"}
  74             declare -i sizePadding="${#size} - 1"
  75             size=( $size ) # remove spaces
  76             size=${size/.?/}
  77             # ignore the hardlinks that files/dirs always have
  78             if [[ ${line:0:1} == d ]]; then
  79                 hardLinks=$(( hardLinks - 2 ))
  80             else
  81                 hardLinks=$(( hardLinks - 1 ))
  82             fi
  83             [[ $hardLinks == 0 ]] && hardLinks=
  84             printf "%s%4o%${hardLink_spacing}s%s%${sizePadding}s%s\n" \
  85                    "${line:0:1}" $perm "$hardLinks" " $middle" "$size" " $tail"
  86         fi
  87     done
  88 }
  89