This file is indexed.

/usr/bin/compton-trans is in compton 0.1~beta2-1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
#!/bin/sh

#
# compton-trans
# transset in a bash script
# Copyright (c) 2011-2012, Christopher Jeffrey
#

# Usage:
#  $ compton-trans [options] [+|-]opacity
# By window id
#   $ compton-trans -w "$WINDOWID" 75
# By name
#   $ compton-trans -n "urxvt" 75
# By current window
#   $ compton-trans -c 75
# By selection
#   $ compton-trans 75
#   $ compton-trans -s 75
# Increment current window 5%
#   $ compton-trans -c +5
# Delete current window's opacity
#   $ compton-trans -c --delete
# Reset all windows
#   $ compton-trans --reset

# "command" is a shell built-in, faster than "which"
if test -z "$(command -v xprop)" -o -z "$(command -v xwininfo)"; then
  echo 'Please install x11-utils/xorg-xprop/xorg-xwininfo.' >& 2
  exit 1
fi

# Variables
active=
wprefix=
window=
opacity=
cur=
action=
treeout=
wid=
topmost=
lineno=
option=
v=

# Workaround: replace '-5' with '~5' so as not to confuse getopts.
for v in "$@"; do
  shift && set -- "$@" "$(echo "$v" | sed 's/^-\([0-9]\+%\?\)$/~\1/')"
done

# This takes into account the fact that getopts stops on
# any argument it doesn't recongize or errors on. This
# allows for things like `compton-trans -5` as well
# as `compton-trans -c +5 -s` (contrived example).
while test $# -gt 0; do
  # Reset option index
  OPTIND=1

  # Read options
  while getopts 'scrdgn:w:o:-:' option "$@"; do
    if test "$option" = '-'; then
      case "$OPTARG" in
        select | current | reset | delete | get)
          v=''
        ;;
        name | window | opacity)
          eval v=\$$OPTIND
          OPTIND=$((OPTIND + 1))
        ;;
        name=* | window=* | opacity=*)
          v=$(echo "$OPTARG" | sed 's/^[^=]\+=//')
        ;;
        *)
          echo "$0: illegal option $OPTARG" >& 2
          exit 1
        ;;
      esac
      option=$(echo "$OPTARG" | cut -c 1)
      OPTARG=$v
    fi
    case "$option" in
      s) wprefix=''; window='' ;;
      c)
        active=$(xprop -root -notype _NET_ACTIVE_WINDOW \
          | sed 's/^.*\(0x\S*\).*$/\1/')
        wprefix='-id'; window=$active
      ;;
      r) action='reset' ;;
      d) action='delete' ;;
      g) action='get' ;;
      n) wprefix='-name'; window=$OPTARG ;;
      w) wprefix='-id'; window=$OPTARG ;;
      o) opacity=$OPTARG ;;
      \?) exit 1 ;;
    esac
  done

  # Read positional arguments
  shift $((OPTIND - 1))
  test -n "$1" && opacity=$1 && shift
done

# clean up opacity. xargs == a poor man's trim.
opacity=$(echo "$opacity" | xargs | sed 's/%//g' | sed 's/^~\([0-9]\+\)$/-\1/')

# Validate opacity value
if test -z "$action" && ! echo "$opacity" | grep -q '^[+-]\?[0-9]\+$'; then
  echo "Invalid opacity specified: $opacity."
  exit 1
fi

# Reset opacity for all windows
if test x"$action" = x'reset'; then
  xwininfo -root -tree \
  | sed -n 's/^     \(0x[[:xdigit:]]*\).*/\1/p' \
  | while IFS=$'\n' read wid; do
    xprop -id "$wid" -remove _NET_WM_WINDOW_OPACITY
  done
  exit 0
fi

# Get ID of the target window
if test -z "$wprefix"; then
  treeout=$(xwininfo -children -frame)
else
  test "$wprefix" = '-id' \
    && ! echo "$window" | grep -Eiq '^[[:space:]]*(0x[[:xdigit:]]+|[[:digit:]]+)[[:space:]]*$' \
    && echo 'Bad window ID.' && exit 1
  treeout=$(xwininfo -children $wprefix "$window")
fi

wid=$(echo "$treeout" | sed -n 's/^xwininfo:.*: \(0x[[:xdigit:]]*\).*$/\1/p')

if test -z "$wid"; then
  echo 'Failed to find window.'
  exit 1
fi

# Make sure it's not root window
if echo "$treeout" | fgrep -q 'Parent window id: 0x0'; then
  echo 'Cannot set opacity on root window.'
  exit 1
fi

# If it's already the topmost window
if echo "$treeout" | grep -q 'Parent window id: 0x[[:xdigit:]]* (the root window)'; then
  topmost=$wid
else
  # Get the whole window tree
  treeout=$(xwininfo -root -tree)

  if test -z "$treeout"; then
    echo 'Failed to get root window tree.'
    exit 1
  fi

  # Find the line number of the target window in the window tree
  lineno=$(echo -n "$treeout" | grep -nw "$wid" | head -n1 | cut -d ':' -f 1)

  if test -z "$lineno"; then
    echo 'Failed to find window in window tree.'
    exit 1
  fi

  # Find the highest ancestor of the target window below
  topmost=$(echo -n "$treeout" \
    | head -n $((lineno + 1)) \
    | sed -n 's/^     \(0x[[:xdigit:]]*\).*/\1/p' \
    | tail -n 1)
fi

if test -z "$topmost"; then
  echo 'Failed to find the highest parent window below root of the' \
    'selected window.'
  exit 1
fi

# Remove the opacity property.
if test x"$action" = x'delete'; then
  xprop -id "$topmost" -remove _NET_WM_WINDOW_OPACITY
  exit 0
fi

# Get current opacity.
cur=$(xprop -id "$topmost" -notype _NET_WM_WINDOW_OPACITY \
  | sed 's/^.*\b\([0-9]\+\).*$\|^.*$/\1/')
test -z "$cur" && cur=0xffffffff
cur=$((cur * 100 / 0xffffffff))

# Output current opacity.
if test x"$action" = x'get'; then
  echo "$cur"
  exit 0
fi

# Calculate the desired opacity
if echo "$opacity" | grep -q '^[+-]'; then
  opacity=$((cur + opacity))
fi

test $opacity -lt 0 && opacity=0
test $opacity -gt 100 && opacity=100

# Set opacity
opacity=$((opacity * 0xffffffff / 100))
xprop -id "$topmost" -f _NET_WM_WINDOW_OPACITY 32c \
  -set _NET_WM_WINDOW_OPACITY "$opacity"