man rsync
-n, --dry-run show what would have been transferred
它只会秀出清单,不会实际把 src 的资料同步到 dst
我建立了 1 2 目录,及档案 a b c,如下
# ls 1 2
1:
a b c
2:
c
结果
# rsync -av --dry-run 1 2
sending incremental file list
1/
1/a
1/b
1/c
sent 72 bytes received 25 bytes 194.00 bytes/sec
total size is 0 speedup is 0.00 (DRY RUN)
那如果要有图形介面的,可以试用 meld