ls存在的文件，不能操作

bash-4.2# pwd
/oracle/product/10.2.0/db_1/network/admin
bash-4.2# ls
sqlnet.ora                 libnrad10.exp     listener.ora      samples           tnsnames.ora
libnk510.imp      libnrad10.imp     listener.ora.bak  shrept.lst
bash-4.2# cp sqlnet.ora sqlnet.ora.bak
cp: sqlnet.ora: A file or directory in the path name does not exist.
bash-4.2#
bash-4.2#
bash-4.2# ls -ltr
total 40
-rw-r-----    1 oracle   dba             172 Dec 26 2003  shrept.lst
-rw-r-----    1 oracle   dba               0 Aug 14 2005  libnrad10.imp
-rw-r-----    1 oracle   dba               0 Aug 14 2005  libnrad10.exp
-rw-r-----    1 oracle   dba               0 Aug 14 2005  libnk510.imp
drwxr-x---    2 oracle   dba             256 Dec 13 2012  samples
-rw-r--r--    1 oracle   dba             505 Jun 12 09:04 listener.ora.bak
-rw-r--r--    1 oracle   dba             183 Jun 12 09:13 tnsnames.ora
-rw-r--r--    1 oracle   dba              39 Jun 12 09:18 sqlnet.ora
-rw-r--r--    1 oracle   dba             347 Jun 12 09:22 listener.ora
bash-4.2# ls sqlnet.ora
ls: 0653-341 The file sqlnet.ora does not exist.
bash-4.2#

bash-4.2# more sqlnet.ora
sqlnet.ora: A file or directory in the path name does not exist.

ls存在的文件，不能操作

原文：http://www.cnblogs.com/emanlee/p/4571068.html