[Comprehensive explanation of Linux commands] 094. Explore Linux commands: the use of lpq, bye and ftp

lpq

Display status information for print jobs in the print queue

Additional information

lpqThe command is used to display the status information of print tasks in the print queue.

grammar

lpq(选项)

options

• -E: Mandatory use of encryption to connect to the server;
• -P: The print queue status on the printer being displayed;;
• -U: automatically optional username;
• -a: report defined tasks for all printers;
• -h: Specifies the print server information;
• -l: use long format output;
• +: Specifies the interval time for displaying the state.

bye

The command is used to interrupt the FTP connection and end the program

Additional information

byeIn command ftpmode, enter bye to interrupt the current connection operation and end ftpits execution.

grammar

bye

Example

bye

ftp

Used to set file system related functions

Additional information

ftpCommands are used to set file system related functions. ftpServers are more common on the Internet. Linux ftpThe function of the command is to use commands to control the transfer of files between the local machine and the remote machine. Here are Linux ftpsome frequently used commands of the command. I believe it will be very easy to master these Linuxand ftpoperate them.

grammar

ftp(选项)(参数)

options

• -d: Display the instruction execution process in detail to facilitate troubleshooting or analysis of program execution;
• -i: Close the interactive mode, do not ask any questions;
• -g: Turn off the extended feature of supporting special characters in local host file names;
• -n: do not use automatic login;
• -v: Display the command execution process.

parameter

• 主机ip: Specify the host name or address of the FTP server to connect to .

Example

ftp> ascii  # 设定以ASCII方式传送文件(缺省值) 
ftp> bell   # 每完成一次文件传送,报警提示. 
ftp> binary # 设定以二进制方式传送文件. 
ftp> bye    # 终止主机FTP进程,并退出FTP管理方式. 
ftp> case   # 当为ON时,用MGET命令拷贝的文件名到本地机器中,全部转换为小写字母. 
ftp> cd     # 同UNIX的CD命令. 
ftp> cdup   # 返回上一级目录. 
ftp> chmod  # 改变远端主机的文件权限. 
ftp> close  # 终止远端的FTP进程,返回到FTP命令状态, 所有的宏定义都被删除. 
ftp> delete # 删除远端主机中的文件. 
ftp> dir [remote-directory] [local-file] # 列出当前远端主机目录中的文件.如果有本地文件,就将结果写至本地文件. 
ftp> get [remote-file] [local-file] # 从远端主机中传送至本地主机中. 
ftp> help [command] # 输出命令的解释. 
ftp> lcd # 改变当前本地主机的工作目录,如果缺省,就转到当前用户的HOME目录. 
ftp> ls [remote-directory] [local-file] # 同DIR. 
ftp> macdef                 # 定义宏命令. 
ftp> mdelete [remote-files] # 删除一批文件. 
ftp> mget [remote-files]    # 从远端主机接收一批文件至本地主机. 
ftp> mkdir directory-name   # 在远端主机中建立目录. 
ftp> mput local-files # 将本地主机中一批文件传送至远端主机. 
ftp> open host [port] # 重新建立一个新的连接. 
ftp> prompt           # 交互提示模式. 
ftp> put local-file [remote-file] # 将本地一个文件传送至远端主机中. 
ftp> pwd  # 列出当前远端主机目录. 
ftp> quit # 同BYE. 
ftp> recv remote-file [local-file] # 同GET. 
ftp> rename [from] [to]     # 改变远端主机中的文件名. 
ftp> rmdir directory-name   # 删除远端主机中的目录. 
ftp> send local-file [remote-file] # 同PUT. 
ftp> status   # 显示当前FTP的状态. 
ftp> system   # 显示远端主机系统类型. 
ftp> user user-name [password] [account] # 重新以别的用户名登录远端主机. 
ftp> ? [command] # 同HELP. [command]指定需要帮助的命令名称。如果没有指定 command，ftp 将显示全部命令的列表。
ftp> ! # 从 ftp 子系统退出到外壳。

FTP anonymous login account password

Account: anonymous
Password: anonymous@

Close FTP connection

• bye
• exit
• quit

download file

ftp> get readme.txt # 下载 readme.txt 文件
ftp> mget *.txt     # 下载 

upload files

ftp> put /path/readme.txt # 上传 readme.txt 文件
ftp> mput *.txt           # 可以上传多个文件

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