158 lines
2.4 KiB
Bash
Executable File
158 lines
2.4 KiB
Bash
Executable File
#!/bin/rc
|
|
|
|
rfork e
|
|
|
|
|
|
smon='s/Jan/01/
|
|
s/Feb/02/
|
|
s/Mar/03/
|
|
s/Apr/04/
|
|
s/May/05/
|
|
s/Jun/06/
|
|
s/Jul/07/
|
|
s/Aug/08/
|
|
s/Sep/09/
|
|
s/Oct/10/
|
|
s/Nov/11/
|
|
s/Dec/12/'
|
|
|
|
fn usage {
|
|
echo 'usage: yesterday [-abcCdDs] [-[[[yy]yy]mm]dd] [-n daysago] file ...' >[1=2]
|
|
exit 'usage'
|
|
}
|
|
|
|
fn Xcp {
|
|
echo cp $1 $2
|
|
cp $1 $2
|
|
}
|
|
|
|
fn Xdiff {
|
|
echo diff $1 $2
|
|
diff $1 $2
|
|
}
|
|
fn Xdiffn {
|
|
echo diff -n $1 $2
|
|
diff -n $1 $2
|
|
}
|
|
fn Xadiff {
|
|
echo /acme/bin/adiff $1 $2
|
|
/acme/bin/adiff $1 $2
|
|
}
|
|
|
|
fn Xcarefulcp {
|
|
if(! cmp -s $1 $2) Xcp $1 $2
|
|
}
|
|
|
|
fn Xecho {
|
|
echo $1
|
|
}
|
|
|
|
fn Xbind {
|
|
echo bind $1 $2
|
|
bind $1 $2
|
|
}
|
|
|
|
year=`{date|sed 's/.* //'}
|
|
copy=Xecho
|
|
last=()
|
|
defdump=dump
|
|
while(! ~ $#* 0 && ~ $1 -* && ! ~ $1 --){
|
|
switch($1){
|
|
case -a
|
|
copy=Xadiff
|
|
shift
|
|
case -b
|
|
copy=Xbind
|
|
shift
|
|
case -c
|
|
copy=Xcp
|
|
shift
|
|
case -d
|
|
copy=Xdiff
|
|
shift
|
|
case -D
|
|
copy=Xdiffn
|
|
shift
|
|
case -C
|
|
copy=Xcarefulcp
|
|
shift
|
|
case -s
|
|
defdump=snap
|
|
shift
|
|
case -n*
|
|
if(~ $1 -n){
|
|
if(~ $#* 1)
|
|
usage
|
|
shift
|
|
days=$1
|
|
}
|
|
if not
|
|
days=`{echo $1 | sed 's/^-.//'}
|
|
last=`{date `{hoc -e `{date -n} ^ '-'$days'*60*60*24'} | \
|
|
sed -e 's%... (...) (..) ..:..:.. ... (....)%\3/\1\2%' -e 'y/ /0/' -e $smon}
|
|
shift
|
|
case -?
|
|
mon=`{date|sed -e 's/^....(...).*/\1/' -e $smon}
|
|
last=$year/$mon ^`{echo $1|sed 's/^-/0/'}
|
|
shift
|
|
case -??
|
|
mon=`{date|sed -e 's/^....(...).*/\1/' -e $smon}
|
|
last=$year/$mon ^`{echo $1|sed 's/^-//'}
|
|
shift
|
|
case -????
|
|
last=$year/ ^ `{echo $1|sed 's/^-//'}
|
|
shift
|
|
case -??????
|
|
last=`{echo $year|sed 's/..$//'} ^ `{echo $1|sed 's/^-(..)/\1\//'}
|
|
shift
|
|
case -????????
|
|
last=`{echo $1|sed 's/^-(....)/\1\//'}
|
|
shift
|
|
case *
|
|
usage
|
|
}
|
|
}
|
|
if(! ~ $#* 0 && ~ $1 --)
|
|
shift
|
|
|
|
if(~ $#* 0)
|
|
usage
|
|
|
|
dir=`{pwd}
|
|
if(! ~ $status ''){
|
|
echo 'yesterday: can''t find directory' >[1=2]
|
|
exit 'pwd failed'
|
|
}
|
|
|
|
for(i){
|
|
xpath=`{cleanname -d $dir -- $i}
|
|
xdump=$defdump
|
|
dumppath=$xpath
|
|
if(~ $xpath /n/*/*){
|
|
xdump=`{echo $xpath | sed 's:/n/([^/]+)/.*:\1'$defdump':'}
|
|
dumppath=`{echo $xpath | sed 's:/n/[^/]+(/.*):\1:'}
|
|
}
|
|
if(! test -e /n/$xdump/$year)
|
|
9fs $xdump
|
|
|
|
if(~ $#last 0){
|
|
xlast=`{ls /n/$xdump/$year|sed -n '$p'}
|
|
switch($defdump){
|
|
case snap
|
|
xlast=`{ls $xlast|sed -n '$p'}
|
|
}
|
|
}
|
|
if not
|
|
xlast=/n/$xdump/$last
|
|
|
|
if(! test -e $xlast){
|
|
echo 'yesterday:' \
|
|
`{echo $xlast|sed 's/.n.'$defdump'.(....).(..)(..)/\1 \2 \3/'} \
|
|
'is not a backup day for' $xdump >[1=2]
|
|
exit 'bad date'
|
|
}
|
|
|
|
$copy $xlast^$dumppath $xpath
|
|
}
|
|
exit ''
|