Ubuntu下测试ssh时使用ssh localhost 命令，出现错误提示connect to host localhost port 22:Connection refused   造成这个错误的原因可能是ssh-server未安装或者未启动。ubuntu 11.10 默认安装openssh-client，但是木有安装server   运行 ps -e | grep s

jackson@ubuntu:~$ java -version The program ‘java’ can be found in the following packages: * gcj-4.4-jre-headless  * openjdk-6-jre-headless  * cacao  * gij-4.3  * jamvm Try: sudo apt-get in

ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa /etc/sshd/ssh_config 中设置：     # IdentityFile ~/.ssh/identity     # IdentityFile ~/.ssh/id_rsa     # IdentityFile ~/.ssh/id_dsa

背景 重命名了  libc.so.6 文件 [root@myheart-6 test]# cd /lib64 [root@myheart-6 lib64]# mv libc.so.6 lib.so.6.backup 导致shell很多命令无法执行 [root@myheart-6 lib64]# ls ls: error while loading shared librarie