1 17e662e9 2005-07-13 devnull #!/usr/local/plan9/bin/rc
  2 17e662e9 2005-07-13 devnull 
  3 17e662e9 2005-07-13 devnull path=($path $PLAN9/bin)
  4 17e662e9 2005-07-13 devnull 
  5 17e662e9 2005-07-13 devnull fn usage {
  6 17e662e9 2005-07-13 devnull 	echo 'usage: yesterday [-cd] [-[[yy]yy]mm]dd] [-n daysago] file ...' >[1=2]
  7 17e662e9 2005-07-13 devnull 	exit 1
  8 17e662e9 2005-07-13 devnull }
  9 17e662e9 2005-07-13 devnull 
 10 17e662e9 2005-07-13 devnull fn Xcp {
 11 17e662e9 2005-07-13 devnull 	echo cp $1 $2
 12 17e662e9 2005-07-13 devnull 	cp $1 $2
 13 17e662e9 2005-07-13 devnull }
 14 17e662e9 2005-07-13 devnull 
 15 17e662e9 2005-07-13 devnull fn Xcarefulcp {
 16 17e662e9 2005-07-13 devnull 	if(! cmp -s $1 $2) Xcp $1 $2
 17 17e662e9 2005-07-13 devnull }
 18 17e662e9 2005-07-13 devnull 
 19 17e662e9 2005-07-13 devnull fn Xdiff {
 20 17e662e9 2005-07-13 devnull 	echo diff -c $1 $2
 21 17e662e9 2005-07-13 devnull 	diff -c $1 $2
 22 17e662e9 2005-07-13 devnull }
 23 17e662e9 2005-07-13 devnull 
 24 17e662e9 2005-07-13 devnull fn Xecho {
 25 17e662e9 2005-07-13 devnull 	echo $1
 26 17e662e9 2005-07-13 devnull }
 27 17e662e9 2005-07-13 devnull 
 28 17e662e9 2005-07-13 devnull year=`{date|sed 's/.* //'}
 29 17e662e9 2005-07-13 devnull copy=Xecho
 30 17e662e9 2005-07-13 devnull last=()
 31 17e662e9 2005-07-13 devnull while(! ~ $#* 0 && ~ $1 -* && ! ~ $1 --){
 32 17e662e9 2005-07-13 devnull 	switch($1){
 33 17e662e9 2005-07-13 devnull 	case -c
 34 17e662e9 2005-07-13 devnull 		copy=Xcp
 35 17e662e9 2005-07-13 devnull 		shift
 36 17e662e9 2005-07-13 devnull 	case -d
 37 17e662e9 2005-07-13 devnull 		copy=Xdiff
 38 17e662e9 2005-07-13 devnull 		shift
 39 17e662e9 2005-07-13 devnull 	case -C
 40 17e662e9 2005-07-13 devnull 		copy=Xcarefulcp
 41 17e662e9 2005-07-13 devnull 		shift
 42 17e662e9 2005-07-13 devnull 	case -n*
 43 17e662e9 2005-07-13 devnull 		if(~ $1 -n){
 44 17e662e9 2005-07-13 devnull 			if(~ $#* 1)
 45 17e662e9 2005-07-13 devnull 				usage
 46 17e662e9 2005-07-13 devnull 			shift
 47 17e662e9 2005-07-13 devnull 			days=$1
 48 17e662e9 2005-07-13 devnull 		}
 49 17e662e9 2005-07-13 devnull 		if not
 50 17e662e9 2005-07-13 devnull 			days=`{echo $1 | sed 's/^-.//'}
 51 17e662e9 2005-07-13 devnull 		last=`{date -r `{perl -e 'print time() - '$days'*60*60*24'} | 
 52 17e662e9 2005-07-13 devnull 				9 sed -e 's%... (...) (..) ..:..:.. ... (....)%\3/\1\2%' -e 'y/ /0/' -e $smon}
 53 17e662e9 2005-07-13 devnull 		shift
 54 17e662e9 2005-07-13 devnull 	case -[0-9]
 55 17e662e9 2005-07-13 devnull 		mon=`{date|9 sed 's/^....(...).*/\1/' -e $smon}
 56 17e662e9 2005-07-13 devnull 		last=$year/$mon ^`{echo $1|sed 's/^-/0/'}
 57 17e662e9 2005-07-13 devnull 		shift
 58 17e662e9 2005-07-13 devnull 	case -[0-9][0-9]
 59 17e662e9 2005-07-13 devnull 		mon=`{date|9 sed 's/^....(...).*/\1/' -e $smon}
 60 17e662e9 2005-07-13 devnull 		last=$year/$mon ^`{echo $1|9 sed 's/^-//'}
 61 17e662e9 2005-07-13 devnull 		shift
 62 17e662e9 2005-07-13 devnull 	case -[0-9][0-9][0-9][0-9]
 63 17e662e9 2005-07-13 devnull 		last=$year/ ^ `{echo $1|9 sed 's/^-//'}
 64 17e662e9 2005-07-13 devnull 		shift
 65 17e662e9 2005-07-13 devnull 	case -[0-9][0-9][0-9][0-9][0-9][0-9]
 66 17e662e9 2005-07-13 devnull 		last=`{echo $year|9 sed 's/..$//'} ^ `{echo $1|9 sed 's/^-(..)/\1\//'}
 67 17e662e9 2005-07-13 devnull 		shift
 68 17e662e9 2005-07-13 devnull 	case -[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]
 69 17e662e9 2005-07-13 devnull 		last=`{echo $1|9 sed 's/^-(....)/\1\//'}
 70 17e662e9 2005-07-13 devnull 		shift
 71 17e662e9 2005-07-13 devnull 	case *
 72 17e662e9 2005-07-13 devnull 		usage
 73 17e662e9 2005-07-13 devnull 	}
 74 17e662e9 2005-07-13 devnull }
 75 17e662e9 2005-07-13 devnull if(! ~ $#* 0 && ~ $1 --)
 76 17e662e9 2005-07-13 devnull 	shift
 77 17e662e9 2005-07-13 devnull 
 78 17e662e9 2005-07-13 devnull if(~ $#* 0)
 79 17e662e9 2005-07-13 devnull 	usage
 80 17e662e9 2005-07-13 devnull 
 81 17e662e9 2005-07-13 devnull dir=`{pwd}
 82 17e662e9 2005-07-13 devnull if(! ~ $status ''){
 83 17e662e9 2005-07-13 devnull 	echo 'yesterday: can''t find directory' >[1=2]
 84 17e662e9 2005-07-13 devnull 	exit 'pwd failed'
 85 17e662e9 2005-07-13 devnull }
 86 17e662e9 2005-07-13 devnull 
 87 17e662e9 2005-07-13 devnull h=`{hostname}
 88 17e662e9 2005-07-13 devnull switch($h){
 89 17e662e9 2005-07-13 devnull case amsterdam
 90 17e662e9 2005-07-13 devnull 	xdump=/dump/am
 91 17e662e9 2005-07-13 devnull case *
 92 17e662e9 2005-07-13 devnull 	if(! test -d /dump/$h){
 93 17e662e9 2005-07-13 devnull 		echo 'no dumps on '^`{hostname} >[1=2]
 94 17e662e9 2005-07-13 devnull 		exit 1
 95 17e662e9 2005-07-13 devnull 	}
 96 17e662e9 2005-07-13 devnull 	xdump=/dump/$h
 97 17e662e9 2005-07-13 devnull }
 98 17e662e9 2005-07-13 devnull 
 99 17e662e9 2005-07-13 devnull for(i){
100 17e662e9 2005-07-13 devnull 	xpath=$i
101 17e662e9 2005-07-13 devnull 	if(! ~ $xpath /*)
102 17e662e9 2005-07-13 devnull 		xpath=`{9 cleanname -d `{pwd} $i}
103 17e662e9 2005-07-13 devnull 	dumppath=$xpath
104 17e662e9 2005-07-13 devnull 	if(~ $#last 0)
105 17e662e9 2005-07-13 devnull 		xlast=`{9 ls -t $xdump/$year|sed 1q}
106 17e662e9 2005-07-13 devnull 	if not
107 17e662e9 2005-07-13 devnull 		xlast=$xdump/$last
108 17e662e9 2005-07-13 devnull 	$copy $xlast^$dumppath $xpath
109 17e662e9 2005-07-13 devnull }