#!/bin/bash
+## Originally...
# Copyright (c) 2004 Matthias S. Benkmann <article AT winterdrache DOT de>
# You may do everything with this code except misrepresent its origin.
# PROVIDED `AS IS' WITH ABSOLUTELY NO WARRANTY OF ANY KIND!
-#The following list should contain the mount points of all filesystems
-#that are to be scanned as a space-separated list within parentheses.
-#/ will usually be in this list and if you have /usr
-#on a separate partition, it will also be in this list.
-#Mount points whose filesystems are special, such as procfs or sysfs must
-#not be in this list. While a simple find on those special filesystems should
-#be harmless, operations such as "-exec grep something" are NOT SAFE and may
-#have HARMFUL SIDE-EFFECTS, especially when performed as root.
+# Copyright (C) 2014 Steve Youngs <steve@steveyoungs.com>
+# Many updates/tweaks --SY.
+
+# The following list should contain the mount points of all
+# filesystems that are to be scanned as a space-separated list within
+# parentheses. / will usually be in this list and if you have /usr on
+# a separate partition, it will also be in this list. Mount points
+# whose filesystems are special, such as procfs or sysfs must not be
+# in this list. While a simple find on those special filesystems
+# should be harmless, operations such as "-exec grep something" are
+# NOT SAFE and may have HARMFUL SIDE-EFFECTS, especially when
+# performed as root.
## Bastard settings
-# fs_to_scan=(/ /opt /usr /usr/local /var)
+# fs_to_scan=(/ /opt /usr /var)
fs_to_scan=(/)
-#Files with a path prefix found in the following list are ignored. As the
-#main function of this script is to help you find files that contain
-#hardwired paths to /tools or other unwanted references to
-#your build system, you will usually prune any directories that don't contain
-#files of interest, such as /tools (whose files naturally refer to /tools)
-#and your package users' home directories (which may also test positive if
-#you have unpacked and configured sources lying around).
-#NOTE: The LFS-6.0 book uses a ramfs mounted on /dev and with that setup
-#/dev does not need to be in the prune list. But since there is no requirement
-#that /dev have its on filesystem it's better to prune it explicitly.
-prune_prefixes=(/home /usr/src /dev /tools) #NO TRAILING SLASHES!!!
+## NOTE: if any of the directories listed in fs_to_scan contain
+## non-UNIX filesystems (MS-DOS, CD-ROM etc) you need to set $NOLEAF
+## here to `-noleaf'. But only do so if you really need to as it
+## comes with a significant slow down on the find.
+# NOLEAF='-noleaf'
+NOLEAF=
+
+# Files with a path prefix found in the following list are ignored. As
+# the main function of this script is to help you find files that
+# contain hardwired paths to /tools or other unwanted references to
+# your build system, you will usually prune any directories that don't
+# contain files of interest, such as /tools (whose files naturally
+# refer to /tools) and your package users' home directories (which may
+# also test positive if you have unpacked and configured sources lying
+# around).
+#
+# NOTE: If a directory you want to prune is on a separate filesystem
+# (separate from those listed in fs_to_scan) you don't need to list it
+# here because of the -xdev option used in the find command.
+
+## Bastard settings
+# prune_prefixes=(\
+# /{,*/{,*/}}lost+found \
+# /root \
+# /opt/pgsql/data \
+# /opt/sql-ledger/{spool,templates,users,css} \
+# /etc/apache/ssl.key \
+# /etc/audisp/plugins.d \
+# /etc/cups/ssl \
+# /etc/firewall \
+# /etc/polkit-1/rules.d \
+# /etc/skel \
+# /etc/ssl/private \
+# /etc/sudoers.d \
+# /var/lib/{sasl,sudo,net-snmp,udisks{,2},NetworkManager} \
+# /var/log \
+# /usr/lib/pkgusr \
+# /usr/share/polkit-1/rules.d \
+# /var/tmp \
+# /var/{cache,chroot,run,snmp,spool} \
+# /var/lib/{sshd,nfs,spamassassin,pulse}) #NO TRAILING SLASHES!!!!
+
+prune_prefixes=(\
+ /home \
+ /usr/lib/pkgusr \
+ /usr/src \
+ /dev \
+ /tools) #NO TRAILING SLASHES!!!
if [ $# -lt 1 -o "$1" = "--help" ]; then
echo 1>&2
exit 1
fi
-#suppress ugly debug output from shell
+# suppress ugly debug output from shell
trap ':' SIGPIPE
-#construct find commands that match the prune_prefixes. Each prefix will be
-#matched as -path <prefix> -or -path <prefix>/*
-#so that the directory itself and all subdirectories are matched.
+# construct find commands that match the prune_prefixes. Each prefix will be
+#
matched as -path <prefix> -or -path <prefix>/*
+# so that the directory itself and all subdirectories are matched.
y=(\( -false)
for ((i=0; $i<${#prune_prefixes[@]}; i=$i+1))
do
cmd_pre=(-type f -exec grep -l)
cmd_post=(-- {} \;)
-#In the following find command, the part
+# In the following find command, the part
# -not ( ( "${y[@]}" -prune ) -or "${y[@]}" )
-#is responsible for preventing the files that match prune_prefixes from
-#being processed. The 2nd "${y[@]}" may seem redundant, but it isn't, because
-#-prune has no effect and is always false when -depth is used (which someone
-#might do in the future).
-#The -true before "$@" ensures that -depth can be passed as 1st parameter
-#of $cmd_pre (should someone change it in the future).
-find "${fs_to_scan[@]}" -xdev -noleaf \
+# is responsible for preventing the files that match prune_prefixes from
+# being processed. The 2nd "${y[@]}" may seem redundant, but it isn't, because
+# -prune has no effect and is always false when -depth is used (which someone
+# might do in the future).
+# The -true before "$@" ensures that -depth can be passed as 1st parameter
+# of $cmd_pre (should someone change it in the future).
+find "${fs_to_scan[@]}" -xdev $NOLEAF \
-not \( \( "${y[@]}" -prune \) -or "${y[@]}" \) \
-and \( -true "${cmd_pre[@]}" "$@" "${cmd_post[@]}" \)
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