by default convmv will detect if a filename is already UTF8 encoded
and will skip this file if conversion from some charset to UTF8
should be performed. "--nosmart" will also force conversion to
UTF-8 for such files, which might result in "double encoded UTF-8"
(see section below).
sunny@sunny:~$ sudo apt-get install convmv
E: 无法获得锁 /var/lib/dpkg/lock - open (11 Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?