Curl简介

Curl是一个利用URL语法在命令行下工作的文件传输工具，1997年首次发行。它支持文件上传和下载，所以是综合传输工具，但按传统，习惯称Curl为下载工具。Curl还包含了用于程序开发的libcurl。

Curl支持的通信协议有FTP、FTPS、HTTP、HTTPS、TFTP、SFTP、Gopher、SCP、Telnet、DICT、FILE、LDAP、LDAPS、IMAP、POP3、SMTP和RTSP。文章源自小柒网-https://www.yangxingzhen.cn/6923.html

Curl还支持SSL认证、HTTP POST、HTTP PUT、FTP上传, HTTP form based upload、proxies、HTTP/2、cookies、用户名+密码认证(Basic, Plain, Digest, CRAM-MD5, NTLM, Negotiate and Kerberos)、file transfer resume、proxy tunneling。文章源自小柒网-https://www.yangxingzhen.cn/6923.html

说明：文章源自小柒网-https://www.yangxingzhen.cn/6923.html

由于业务需要，服务器上的Curl版本太老了，有漏洞，于是抽点时间升级最新版本，确保服务器间通信安全。文章源自小柒网-https://www.yangxingzhen.cn/6923.html

Yum安装

1、安装repo
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[root@localhost ~]# rpm -Uvh http://www.city-fan.org/ftp/contrib/yum-repo/rhel6/x86_64/city-fan.org-release-2-1.rhel6.noarch.rpm
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3、修改该repo的enable为1
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[root@localhost ~]# vim /etc/yum.repos.d/city-fan.org.repo
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[city-fan.org]
name=city-fan.org repository for Red Hat Enterprise Linux (and clones) $releasever ($basearch)
#baseurl=http://mirror.city-fan.org/ftp/contrib/yum-repo/rhel$releasever/$basearch
mirrorlist=http://mirror.city-fan.org/ftp/contrib/yum-repo/mirrorlist-rhel$releasever
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-city-fan.org
 
[city-fan.org-debuginfo]
name=city-fan.org debuginfo repository for Red Hat Enterprise Linux (and clones) $releasever ($basearch)
#baseurl=http://www.city-fan.org/ftp/contrib-debug/rhel$releasever/$basearch
mirrorlist=http://www.city-fan.org/ftp/contrib-debug/mirrorlist-rhel$releasever
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-city-fan.org
 
[city-fan.org-source]
name=city-fan.org source repository for Red Hat Enterprise Linux (and clones) $releasever
#baseurl=http://mirror.city-fan.org/ftp/contrib/yum-repo/rhel$releasever/source
mirrorlist=http://mirror.city-fan.org/ftp/contrib/yum-repo/source-mirrorlist-rhel$releasever
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-city-fan.org

4、安装依赖
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[root@localhost ~]# rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/Packages/l/libnghttp2-1.6.0-1.el6.1.x86_64.rpm
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5、安装最新的curl

[root@localhost ~]# yum update curl --enablerepo=city-fan.org -y

6、查看curl版本

[root@localhost ~]# curl -V

curl 7.70.0 (x86_64-redhat-linux-gnu) libcurl/7.70.0 NSS/3.44 zlib/1.2.7 libpsl/0.7.0 (+libicu/50.1.2) libssh2/1.9.0 nghttp2/

1.6.0Release-Date: 2020-04-29

Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tft

p Features: AsynchDNS GSS-API HTTP2 HTTPS-proxy IPv6 Kerberos Largefile libz Metalink NTLM NTLM_WB PSL SPNEGO SSL UnixSockets