bash: scp: command not found lost connection

最新推荐文章于 2021-05-14 02:42:41 发布
最新推荐文章于 2021-05-14 02:42:41 发布
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本文链接：https://blog.youkuaiyun.com/why123wh/article/details/104808632
本文介绍了一种常见的情况，即在系统中发现重复安装了OpenSSH软件，并提供了使用rpm命令进行验证的方法。通过执行“rpm -qa openssh*”，可以检查系统上所有已安装的OpenSSH相关软件包，从而帮助识别并解决重复安装的问题。

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报错

在这里插入图片描述

验证是否安装了openshh软件

rpm -qa openssh*

在这里插入图片描述

  • 发现本机装有重复的openssh软件
    在这里插入图片描述
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在内网，从一台服务器传mysql的源码安装包到另外一台服务器时，发生如下的错误：[root@localhost ~]# scp mysql-5.1.55.tar.gz root@192.168.3.22:.root@192.168.3.22's password:bash: scp: command not foundlost connection提示scp的命令找不到，但...
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若本机可以使用scp，那么执行scp上传文件时，报错误： bash: scp: command not found lost connection 那么说明对方没有安装openssh-clients软件包。
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# scp -bash: scp: command not found # which scp /usr/bin/scp # rpm -qf /usr/bin/scp openssh-clients-4.3p2-72.el5 # yum install openssh-clients 或者从光盘上安装 # rpm -ivh libedit-2.11-4.20080712cvs.1.el6....
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当你在Linux终端中尝试运行`scp`命令，但是收到"command not found"错误提示时，这意味着你的系统中找不到`scp`这个命令。`scp`是Secure Copy（安全复制）命令，通常用于在Unix/Linux系统之间安全地传输文件，它位于...
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信息安全防护的目标 保密性 Confidentiality 完整性 Integrity 可用性 Usability 可控制性 Controlability 不可否认性 Non-repudiation 安全防护环节 物理安全：各种设备/主机、机房环境 系统安全：主机或设备的操作系统 应用安全：各种网络服务、应用程序 网络安全：对网络访问的控制、防火墙规则 数据安全：信息的备份与恢复、加密解密 管理安全：各种保障性的规范、流程、方法 安全攻击： STRIDE Spoofing 假冒 [root@centos7
scp -vvv -o PreferredAuthentications=publickey -oHostKeyAlgorithms=+ssh-rsa -oHostKeyAlgorithms=ssh-rsa -i /home/rataneodsftp/.ssh/id_rsa test.csv cciladmin@172.26.26.237:C:\\MXCCILFRSGIFTCITY\\unsent Executing: program /usr/bin/ssh host 172.26.26.237, user cciladmin, command scp -v -t C:\MXCCILFRSGIFTCITY\unsent OpenSSH_8.0p1, OpenSSL 1.1.1k FIPS 25 Mar 2021 debug1: Reading configuration data /etc/ssh/ssh_config debug3: /etc/ssh/ssh_config line 52: Including file /etc/ssh/ssh_config.d/05-redhat.conf depth 0 debug1: Reading configuration data /etc/ssh/ssh_config.d/05-redhat.conf debug2: checking match for 'final all' host 172.26.26.237 originally 172.26.26.237 debug3: /etc/ssh/ssh_config.d/05-redhat.conf line 3: not matched 'final' debug2: match not found debug3: /etc/ssh/ssh_config.d/05-redhat.conf line 5: Including file /etc/crypto-policies/back-ends/openssh.config depth 1 (parse only) debug1: Reading configuration data /etc/crypto-policies/back-ends/openssh.config debug3: gss kex names ok: [gss-curve25519-sha256-,gss-nistp256-sha256-,gss-group14-sha256-,gss-group16-sha512-] debug3: kex names ok: [curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512] debug1: configuration requests final Match pass debug2: resolve_canonicalize: hostname 172.26.26.237 is address debug1: re-parsing configuration debug1: Reading configuration data /etc/ssh/ssh_config debug3: /etc/ssh/ssh_config line 52: Including file /etc/ssh/ssh_config.d/05-redhat.conf depth 0 debug1: Reading configuration data /etc/ssh/ssh_config.d/05-redhat.conf debug2: checking match for 'final all' host 172.26.26.237 originally 172.26.26.237 debug3: /etc/ssh/ssh_config.d/05-redhat.conf line 3: matched 'final' debug2: match found debug3: /etc/ssh/ssh_config.d/05-redhat.conf line 5: Including file /etc/crypto-policies/back-ends/openssh.config depth 1 debug1: Reading configuration data /etc/crypto-policies/back-ends/openssh.config debug3: gss kex names ok: [gss-curve25519-sha256-,gss-nistp256-sha256-,gss-group14-sha256-,gss-group16-sha512-] debug3: kex names ok: [curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512] debug2: ssh_connect_direct debug1: Connecting to 172.26.26.237 [172.26.26.237] port 22. debug1: Connection established. debug1: identity file /home/rataneodsftp/.ssh/id_rsa type 0 debug1: identity file /home/rataneodsftp/.ssh/id_rsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_8.0 debug1: Remote protocol version 2.0, remote software version OpenSSH_for_Windows_9.5 debug1: match: OpenSSH_for_Windows_9.5 pat OpenSSH* compat 0x04000000 debug2: fd 3 setting O_NONBLOCK debug1: Authenticating to 172.26.26.237:22 as 'cciladmin' debug3: send packet: type 20 debug1: SSH2_MSG_KEXINIT sent debug3: receive packet: type 20 debug1: SSH2_MSG_KEXINIT received debug2: local client KEXINIT proposal debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,ext-info-c,kex-strict-c-v00@openssh.com debug2: host key algorithms: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa debug2: ciphers ctos: aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes256-ctr,aes256-cbc,aes128-gcm@openssh.com,aes128-ctr,aes128-cbc debug2: ciphers stoc: aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes256-ctr,aes256-cbc,aes128-gcm@openssh.com,aes128-ctr,aes128-cbc debug2: MACs ctos: hmac-sha2-256-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha2-256,hmac-sha1,umac-128@openssh.com,hmac-sha2-512 debug2: MACs stoc: hmac-sha2-256-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha2-256,hmac-sha1,umac-128@openssh.com,hmac-sha2-512 debug2: compression ctos: none,zlib@openssh.com,zlib debug2: compression stoc: none,zlib@openssh.com,zlib debug2: languages ctos: debug2: languages stoc: debug2: first_kex_follows 0 debug2: reserved 0 debug2: peer server KEXINIT proposal debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group18-sha512,diffie-hellman-group16-sha512,diffie-hellman-group-exchange-sha256,kex-strict-s-v00@openssh.com debug2: host key algorithms: ssh-ed25519 debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr debug2: MACs ctos: hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com debug2: MACs stoc: hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com debug2: compression ctos: none,zlib@openssh.com debug2: compression stoc: none,zlib@openssh.com debug2: languages ctos: debug2: languages stoc: debug2: first_kex_follows 0 debug2: reserved 0 debug3: will use strict KEX ordering debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: aes256-gcm@openssh.com MAC: <implicit> compression: none debug1: kex: client->server cipher: aes256-gcm@openssh.com MAC: <implicit> compression: none debug1: kex: curve25519-sha256 need=32 dh_need=32 debug1: kex: curve25519-sha256 need=32 dh_need=32 debug3: send packet: type 30 debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug3: receive packet: type 31 debug1: Server host key: ssh-ed25519 SHA256:9lZLI0U3Z1VQ1c27zyZuhyjIIsvYtYf0R8UvBPCqNQ0 debug3: hostkeys_foreach: reading file "/home/rataneodsftp/.ssh/known_hosts" debug3: record_hostkey: found key type ED25519 in file /home/rataneodsftp/.ssh/known_hosts:36 debug3: load_hostkeys: loaded 1 keys from 172.26.26.237 debug1: Host '172.26.26.237' is known and matches the ED25519 host key. debug1: Found key in /home/rataneodsftp/.ssh/known_hosts:36 debug3: send packet: type 21 debug1: resetting send seqnr 3 debug2: set_newkeys: mode 1 debug1: rekey out after 4294967296 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug3: receive packet: type 21 debug1: resetting read seqnr 3 debug1: SSH2_MSG_NEWKEYS received debug2: set_newkeys: mode 0 debug1: rekey in after 4294967296 blocks debug1: Will attempt key: /home/rataneodsftp/.ssh/id_rsa RSA SHA256:CHalTQ+japBghp74FxdPQGg1dqm1M8WQXBTbqGXl6i8 explicit debug2: pubkey_prepare: done debug3: send packet: type 5 debug3: receive packet: type 7 debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,sk-ssh-ed25519@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256@openssh.com,webauthn-sk-ecdsa-sha2-nistp256@openssh.com,ssh-dss,ssh-rsa,rsa-sha2-256,rsa-sha2-512> debug1: kex_input_ext_info: publickey-hostbound@openssh.com (unrecognised) debug1: kex_input_ext_info: ping@openssh.com (unrecognised) debug3: receive packet: type 6 debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug3: send packet: type 50 debug3: receive packet: type 53 debug3: input_userauth_banner ######################################################################### # This computer system, its network and data contained therein # # is the property of the Standard Chartered Group. Access to # # this computer and network is restricted to persons and programs # # authorised by the Group only. # # # # Access by others is prohibited and unauthorised, and is wrongful # # under law. Do not proceed if you are not authorised. Any # # unauthorised access will be prosecuted to the fullest extent of # # the law. # ######################################################################### debug3: receive packet: type 51 debug1: Authentications that can continue: password debug3: start over, passed a different list password debug3: preferred publickey debug1: No more authentication methods to try. cciladmin@172.26.26.237: Permission denied (password). lost connection
最新发布
06-11
我们面临的核心问题是SCP连接尝试失败，从调试日志看已经出现了两个关键点：服务器主机密钥算法不匹配（客户端启用ssh-rsa但服务器仅支持ssh-ed25519），以及公钥认证未被服务器接受（服务器只提供密码认证）。...
bash: scp: 未找到命令 lost connection
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通过ssh免密通道上传备份时报错： bash: scp: 未找到命令 lost connection 解决： 分别查看发送端服务器，接收端服务器 1.查找命令是否存在 whereis scp #不存在就重新安装 yum install openssh-clients* 2.检查命令路径是否加入PATH环境变量 echo $PATH 这里我出错的原因是接收端服务器没有安装scp命令 ...
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bash: scp: command not found
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