<DIV> 1:#!/bin/bash 2:# Merge symlink files 3:# Author: Damien Clark 4:# Date: 8/Oct/2000 5:# Purpose: 6:# 7:# Merge files from multiple directories into one directory by linking 8:# This script will create links to files from all of the filename arguments 9:# provided on commandline into the current directory, or from the filename 10:# arguments provided on stdin if no filenames provided on command line. 11:# 12:# The script will check the following properties of the file, before linking it: 13:# 14:# : make sure that each filename provided is actually a regular file (not a 15:# directory or symlink or device file) 16:# : make sure that each file is readable 17:# : make sure that the effective user running the script owns the file, 18:# or the effective group is the group owner ofthe file 19:# 20:# The script will also work properly on filenames with spaces. For example: 21:# 22:# /home/clarkd/My Resume.doc 23:# 24:# Usage: $0 [-s] [-c] [<FILENAME1> <FILENAME2>...] 25:# 26:# -c option -> continue processing even if an error is detected on a file. 27:# Without this option, the script will stop if an error is 28:# detected with a file. 29:# 30:# -s option -> create symbolic links instead of hard links (does not check 31:# if on same filesystem) 32:# 33:# If the script is provided file names as standard input, it can be expressed 34:# as shown in the example below: 35:# 36:# find ~ -type f -print| generatelinks.sh -s 37:# 38:# The command above will create symbolic links to the files found within the 39:# user's home directory, if the file properties match as above. 40:# 41:# If the script is run with filenames provided as command line argument, as 42:# shown in the example below: 43:# 44:# generatelinks.sh /home/clarkd/*.doc /home/clarkd/documents/*.doc 45:# 46:# without the ! -c option, then the script will ask to confirm whether to continue 47:# not to continue, or to continue for all. 48:#Process each file and link it if it is okay. 49:processfile 50:{ 51: lnopts="$1" 52: filename="$2" 53: #file must be "normal file" 54: if [ ! -f "$filename" ] 55: then 56: echo Not a normal file: $filename 57: retval=1 58: #must have "read perms" 59: elif [ ! -r "$filename" ] 60: then 61: echo "No read permissions: $filename" 62: retval=1 63: #user must either effective owner the file or effective group owner of the file 64: elif [ ! -O "$filename" -o ! -G "$filename" ] 65: then 66: echo "No effective ownership or effective group ownership of file: $filename" 67: retval=1 68: #Otherwise all is well, link the file to current directory using existing name 69: else 70: ln $lnopts $filename 71: retval=$? 72: fi 73: #Return the exit status code > 0 if a problem occured 74: return $retval 75:} 76:# Initialise variables 77:cont='N' 78:lnopts='' 79:# Process switches 80:while test "$1" = '-c' '-o' "$1" = '-s' 81:do 82: if [ "$1" = '-c' ] 83: then 84: cont='Y' 85: shift 86: fi 87: if [ "$1" = '-s' ] 88: then 89: lnopts='-s' 90: shift 91: fi 92:done 93:echo "Commencing generation of files 94:if [$# -lt 1] 95: while read filename 96: do 97: processfile "$lnopts" "$filename" 98: result=$? 99: test $result -ne 0 -a "$cont" != 'Y' -a "$cont" != 'y' || exit 1 100: done 101:else 102: for filename in $* 103: do 104: processfile "$lnopts" "$filename" 105: result=$? 106: if [ $result -ne 0 -a "$cont" != 'Y' ] 107: then 108: echo -n "Error occurred. Continue (y/n/a)? " 109: read $cont 110: test "$cont" = 'n' -o "$cont" = 'N' && exit 1 111: [ "$cont" = 'a' || "$cont" = 'A' ] && cont='Y' 112: fi 113: done 114:fi 115:echo "All files processed" <H3>Hints/Tips</H3> • There is only one mistake per line. • ALWAYS include the line number, the description of the problem and your solution. </DIV> <hr size=1>Do you Yahoo!? <a href="http://us.rd.yahoo.com/mail_us/taglines/msgr/evt=26088/*http://messenger.yahoo.com">Y! Messenger</a> - Communicate in real time. Download now.