A single hyphen (-) as a parameter means to change to the previous working directory.
将一个连字符(-)作为参数意味着切换到前一个工作目录。
In order to execute this script, open the DB2 command line processor, change the directory to your current working directory that contains the content of the file you downloaded.
要执行该脚本，打开DB 2命令行处理器，将目录更改到包含所下载文件内容的当前工作目录。
An OBEX client will send a SETPATH request to instruct the OBEX client to change the working directory (the CD command).
OBEX客户机发送SETPATH请求以指导obex客户机改变工作目录(类似于cd命令)。
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