我有一个bash程序,它检查给定端口中的守护进程是否正在工作:
nc -z localhost $port > /dev/null
if [ "$?" != "0" ]
then
echo The server on port $port is not working
exit
fi
这个程序在CentOS 6中运行得很好。然而,CentOS 7似乎已经改变了nc命令的底层实现(CentOS 6似乎使用了Netcat,而CentOS 7使用了另一种称为Ncat的东西),现在-z开关不起作用了:
$ nc -z localhost 8080
nc:
我正在尝试使用以下命令为CentOS 7安装phpMyAdmin:
sudo yum install phpmyadmin
然后,我得到以下消息:
Error: php72u-common conflicts with php-common-5.4.16-45.el7.x86_64
You could try using --skip-broken to work around the problem
如果我尝试使用--skip-broken,它将不会安装phpMyAdmin
这是我安装的php:
yum list installed *php*
Loaded plugins: fastest
我很难在rh-php71 6.10上使用yum安装CentOS软件包,并想知道如何调试根本原因是什么。
我遵循了scl上的说明:
# 1. Install a package with repository for your system:
# On CentOS, install package centos-release-scl available in CentOS repository:
$ sudo yum install centos-release-scl
# On RHEL, enable RHSCL repository for you system:
$ sudo yu
我根据教程《CentOS 6.3 环境搭建discuz论坛 》http://bbs.qcloud.com/thread-1316-1-1.html进行环境搭建部署,发现mysql并不能启动,报错如下:root@VM_203_146_centos bin# service mysqlstartRedirecting to /bin/systemctl start mysql.serviceFailed to issue method call: Unitmysql.service failed to load: No such file or directory.是不是目前命令有改动?附上配置
我需要一些帮助,我正试图在yum update 5.9中安装CentOS,但我遇到了错误
> Loaded plugins: fastestmirror, kmod Loading mirror speeds from cached
> hostfile YumRepo Error: All mirror URLs are not using ftp, http[s] or
> file. Eg. Invalid release/ removing mirrorlist with no valid mirrors:
> /var/cache/yum/base/mirr
我正在尝试用PHP连接到一个PostgreSQL数据库。已经安装了PHP。当我试图在命令行(Centos)上执行以下代码时,下面的错误返回
yum install php-pgsql
Transaction Check Error: file /etc/php.ini from install of php-common-5.3.3-27.el6_5.x86_64 conflicts with file from package php54-common-5.4.24-1.ius.centos6.x86_64 file /usr/lib64/php/modules/curl.so f
我试图在centos 7上安装php来连接远程mssql服务器,但是当我运行‘’时。我出了个冲突错误
Error: php56w-common conflicts with php-common-5.4.16-42.el7.x86_64
You could try using --skip-broken to work around the problem
** Found 3 pre-existing rpmdb problem(s), 'yum check' output follows:
ipa-client-4.4.0-14.el7.centos.6.x86_64 ha
我在服务器上安装了Centos 5.10,并尝试运行以下命令
yum install php53u-pecl-memcached.x86_64
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php53u-pecl-memcached.x86_64 0:1.0.0-3.ius.centos5 set to be updated
--> Processing Dependency: php53u-zend-abi = 20090626 for