昨日推荐:天天学一个 Linux 命令(59):sshnginx
scp 全拼secure copy,用于不一样主机之间复制文件。mongodb
scp命令经常使用于在Linux系统下两个不一样主机之间传输文件,其功能与cp命令类似,可是不一样是,cp命令只能用于在本机环境下传输或复制拷贝文件,scp命令能够跨越不一样主机,而scp传输文件是加密的。centos
scp 它使用ssh进行数据传输,并使用与ssh相同的身份验证并提供相同的安全性,scp 会要求输入密码或其它方式以进行身份验证。api
scp [-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file] [-l limit] [-o ssh_option] [-P port] [-S program] [[user@]host1:]file1 ... [[user@]host2:]file2
-1 #指定使用ssh协议版本为1 -2 #指定使用ssh协议版本为2 -3 #指定两个主机之间的副本经过本地主机传输 -4 #指定使用ipv4 -6 #指定使用ipv6 -B #使用批处理模式 -C #使用压缩模式传输文件 -F #使用指定的ssh配置文件 -i identity_file #从指定文件中读取传输时使用的密钥文件 -l #宽带限制 -o #使用的ssh选项 -P #远程主机的端口号 -p #保留文件的最后修改时间,最后访问时间和权限模式 -q #不输出复制进度信息 -r #以递归方式复制 -S program #指定加密传输时所使用的程序 -v #显示传输过程的详细信息
从远程服务器复制到本地服务器安全
#复制文件 scp root@192.168.1.2:/download/soft/nginx.tar.gz /download/soft/ #复制目录 scp -r root@192.168.1.2:/app/soft/mongodb /app/soft/
以mingongge用户身份将远程主机mingongge.com上的/home/mingongge/backup.tar.gz 文件传送到当前工做目录下,并将传输限制为每秒 80 KB服务器
scp -l 80 mingongge@mingongge.com:/home/mingongge/backup.tar.gz #也能够写成以下 scp -l 80 mingongge@mingongge.com:/home/mingongge/backup.tar.gz ./
使用指定的端口号传输文件session
scp -P 9999 root@192.168.1.2:/download/soft/nginx.tar.gz /download/soft/
查看详细的传输过程app
[root@centos7 ~]# scp -v root@192.168.1.100:/root/nginxWebUI-1.3.5.jar /root/download/ Executing: program /usr/bin/ssh host 192.168.1.100, user root, command scp -v -f /root/nginxWebUI-1.3.5.jar OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 58: Applying options for * debug1: Connecting to 192.168.1.100 [192.168.1.100] port 22. debug1: Connection established. debug1: permanently_set_uid: 0/0 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_rsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.4 debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4 debug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 192.168.1.100:22 as 'root' debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ecdsa-sha2-nistp256 debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none debug1: kex: curve25519-sha256 need=64 dh_need=64 debug1: kex: curve25519-sha256 need=64 dh_need=64 debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ecdsa-sha2-nistp256 SHA256:GqOqgdhVZyEtg/wSM8l5YB+Y6GO8K3Ii7OFsKW9R2n0 The authenticity of host '192.168.1.100 (192.168.1.100)' can't be established. ECDSA key fingerprint is SHA256:GqOqgdhVZyEtg/wSM8l5YB+Y6GO8K3Ii7OFsKW9R2n0. ECDSA key fingerprint is MD5:cc:4b:7d:b6:59:0f:77:83:a9:a5:32:70:4e:87:0d:41. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.1.100' (ECDSA) to the list of known hosts. debug1: rekey after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey after 134217728 blocks debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512> debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available (default cache: KEYRING:persistent:0) debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available (default cache: KEYRING:persistent:0) debug1: Next authentication method: publickey debug1: Trying private key: /root/.ssh/id_rsa debug1: Trying private key: /root/.ssh/id_dsa debug1: Trying private key: /root/.ssh/id_ecdsa debug1: Trying private key: /root/.ssh/id_ed25519 debug1: Next authentication method: password root@192.168.1.100's password: debug1: Authentication succeeded (password). Authenticated to 192.168.1.100 ([192.168.1.100]:22). debug1: channel 0: new [client-session] debug1: Requesting no-more-sessions@openssh.com debug1: Entering interactive session. debug1: pledge: network debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0 debug1: Sending environment. debug1: Sending env LANG = en_US.UTF-8 debug1: Sending command: scp -v -f /root/nginxWebUI-1.3.5.jar Sending file modes: C0644 36196329 nginxWebUI-1.3.5.jar Sink: C0644 36196329 nginxWebUI-1.3.5.jar nginxWebUI-1.3.5.jar 100% 35MB 12.1MB/s 00:02 debug1: client_input_channel_req: channel 0 rtype exit-status reply 0 debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0 debug1: channel 0: free: client-session, nchannels 1 debug1: fd 0 clearing O_NONBLOCK debug1: fd 1 clearing O_NONBLOCK Transferred: sent 12604, received 36237992 bytes, in 4.3 seconds Bytes per second: sent 2916.1, received 8384212.5 debug1: Exit status 0
经过上述过程信息,能够知道scp传输文件的整个过程是什么样的,也能够明白一些原理。ssh