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117 lines
2.5 KiB
Bash
117 lines
2.5 KiB
Bash
#! /bin/sh
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# $Id: descend,v 1.1 1992/04/03 05:22:52 berliner Exp $
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#
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# descend - walk down a directory tree and execute a command at each node
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fullname=$0
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name=descend
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usage="Usage: $name [-afqrv] command [directory ...]\n
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\040\040-a\040\040All: descend into directories starting with '.'\n
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\040\040-f\040\040Force: ignore errors during descent\n
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\040\040-q\040\040Quiet: don't print directory names\n
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\040\040-r\040\040Restricted: don't descend into RCS, CVS.adm, SCCS directories\n
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\040\040-v\040\040Verbose: print command before executing it"
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# Scan for options
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while getopts afqrv option; do
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case $option in
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a)
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alldirs=$option
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options=$options" "-$option
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;;
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f)
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force=$option
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options=$options" "-$option
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;;
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q)
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verbose=
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quiet=$option
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options=$options" "-$option
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;;
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r)
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restricted=$option
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options=$options" "-$option
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;;
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v)
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verbose=$option
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quiet=
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options=$options" "-$option
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;;
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\?)
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/usr/5bin/echo $usage 1>&2
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exit 1
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;;
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esac
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done
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shift `expr $OPTIND - 1`
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# Get command to execute
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if [ $# -lt 1 ] ; then
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/usr/5bin/echo $usage 1>&2
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exit 1
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else
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command=$1
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shift
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fi
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# If no directory specified, use '.'
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if [ $# -lt 1 ] ; then
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default_dir=.
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fi
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# For each directory specified
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for dir in $default_dir "$@" ; do
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# Spawn sub-shell so we return to starting directory afterward
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(cd $dir
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# Execute specified command
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if [ -z "$quiet" ] ; then
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echo In directory `hostname`:`pwd`
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fi
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if [ -n "$verbose" ] ; then
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echo $command
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fi
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eval "$command" || if [ -z "$force" ] ; then exit 1; fi
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# Collect dot file names if necessary
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if [ -n "$alldirs" ] ; then
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dotfiles=.*
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else
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dotfiles=
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fi
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# For each file in current directory
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for file in $dotfiles * ; do
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# Skip '.' and '..'
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if [ "$file" = "." -o "$file" = ".." ] ; then
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continue
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fi
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# If a directory but not a symbolic link
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if [ -d "$file" -a ! -h "$file" ] ; then
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# If not skipping this type of directory
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if [ \( "$file" != "RCS" -a \
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"$file" != "SCCS" -a \
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"$file" != "CVS" -a \
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"$file" != "CVS.adm" \) \
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-o -z "$restricted" ] ; then
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# Recursively descend into it
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$fullname $options "$command" "$file" \
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|| if [ -z "$force" ] ; then exit 1; fi
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fi
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# Else if a directory AND a symbolic link
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elif [ -d "$file" -a -h "$file" ] ; then
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if [ -z "$quiet" ] ; then
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echo In directory `hostname`:`pwd`/$file: symbolic link: skipping
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fi
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fi
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done
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) || if [ -z "$force" ] ; then exit 1; fi
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done
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