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December 21, 2015 09:39
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Sync directory with an ID / name combination
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| #!/bin/sh | |
| dir=${1-test} | |
| mkdir -p $dir | |
| rm -f $dir/updated | |
| while read input ; do | |
| id=${input%=*} | |
| name=${input#*=} | |
| echo -n "#$id -> $name: " | |
| if [ -e $dir/.$id ] ; then | |
| current=$(readlink $dir/.$id) | |
| if [ "$current" != "$name" ] ; then | |
| echo -n "(renamed from $current): " | |
| mv $dir/$current $dir/$name | |
| ln -s -f $name $dir/.$id | |
| fi | |
| echo "OK" | |
| else | |
| echo "Creating..." | |
| mkdir -p $dir/$name | |
| ln -s $name $dir/.$id | |
| fi | |
| echo ".$id=$name" >> $dir/updated | |
| done < test.map | |
| # Find links not in updated file -> to be deleted | |
| sort $dir/updated -o $dir/updated | |
| find $dir -maxdepth 1 -type l -printf '%f=%l\n' | diff -u - $dir/updated | grep ^-.[0-9] | cut -d . -f2 > $dir/delete | |
| while read input ; do | |
| id=${input%=*} | |
| name=${input#*=} | |
| echo "#$id -> $name: Deleting..." | |
| rm $dir/.$id | |
| mv $dir/$name $dir/.$id.deleted | |
| done < $dir/delete | |
| # Clean up | |
| rm $dir/updated $dir/delete | |
| echo "" | |
| echo "@ $dir" | |
| ls -Al $dir |
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| 1549=timm | |
| 1552=alex |
Author
Author
Then modify the line to 1777=dudette:
$ sh sync.sh
#1549 -> timm: OK
#1552 -> alex: OK
#1777 -> dudette: (renamed from dude): OK
@ test
total 3
lrwxrwxrwx 1 Timm Friebe None 4 Aug 20 22:06 .1549 -> timm
lrwxrwxrwx 1 Timm Friebe None 4 Aug 20 22:06 .1552 -> alex
lrwxrwxrwx 1 Timm Friebe None 7 Aug 20 22:08 .1777 -> dudette
drwxr-xr-x+ 1 Timm Friebe None 0 Aug 20 22:06 alex
drwxr-xr-x+ 1 Timm Friebe None 0 Aug 20 22:07 dudette
drwxr-xr-x+ 1 Timm Friebe None 0 Aug 20 22:06 timm
Author
Finally, remove the line with 1777 in it again:
$ sh sync.sh
#1549 -> timm: OK
#1552 -> alex: OK
#1777 -> dudette: Deleting...
@ test
total 2
lrwxrwxrwx 1 Timm Friebe None 4 Aug 20 22:06 .1549 -> timm
lrwxrwxrwx 1 Timm Friebe None 4 Aug 20 22:06 .1552 -> alex
drwxr-xr-x+ 1 Timm Friebe None 0 Aug 20 22:07 .1777.deleted
drwxr-xr-x+ 1 Timm Friebe None 0 Aug 20 22:06 alex
drwxr-xr-x+ 1 Timm Friebe None 0 Aug 20 22:06 timm
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Now add a line
1777=dude: