base
# 获取函数返回值或者上一个命令的退出状态 md5sum -c --status filename.md5 echo $? # 获取结果的第 1 行，第 2 列 ps -ef | grep tomcat | sed -n '1p' | awk '{print $2}' ps -ef | grep tomcat | awk 'NR==1' | awk '{print $2}' ps -ef | grep tomcat | grep -v 'grep.*color=auto' | awk '{print $2}' # 命令输出结果作为输入参数 ps -ef | grep tomcat | grep -v 'grep.*color=auto' | awk '{print $2}' | xargs kill -9
end
shell 常用设置命令
# 关闭防火墙 systemctl stop firewalld.service systemctl disable firewalld.service # 替换阿里 yum 源 mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo yum makecache # 安装 vim yum -y install vim # 关闭连接 ssh 时的 DNS 查询 sed -i 's/GSSAPIAuthentication yes/GSSAPIAuthentication no/g' /etc/ssh/sshd_config sed -i 's/#UseDNS yes/UseDNS no/g' /etc/ssh/sshd_config systemctl restart sshd # 关闭 selinux sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config # 关闭系统提示音 sed -i 's/#set bell-style none/set bell-style none/g' /etc/inputrc # 关闭 Vim 提示音 # sed -i '$asetterm -blength 0' /etc/bashrc echo ':set vb t_vb=' > ~/.vimrc
end
用户，用户组
# 修改文件或文件夹所属的用户和用户组 chown -R jenkins:jenkins ./jenkins/ # 修改文件或文件夹的权限 chmod -R 0777 ./jdk1.8.0_251/ # 查看所有用户 # cat /etc/passwd | grep -v nologin | grep -v halt | grep -v shutdown | awk -F":" '{ print $1"|"$3"|"$4 }' | more cat /etc/passwd # jenkins:x:998:996:Jenkins Automation Server:/var/lib/jenkins:/bin/false # 修改用户目录 usermod -d /opt/jenkins/ -u 998 jenkins # jenkins:x:998:996:Jenkins Automation Server:/opt/jenkins/:/bin/false
end
MD5
# 查看文件 md5 值
md5sum filename
# 查看文件 sha1 值
sha1sum filename
# 查看文件 sha256 值
sha256sum filename
# 查看当前目录下所有文件的 md5 值
md5sum *
end
C 环境
yum install -y cmake gcc gcc-c++ gdb # 新版 cmake # 下载 https://cmake.org/download/ # https://github.com/Kitware/CMake/releases wget -O /opt/cmake-3.17.3.tar.gz https://github.com/Kitware/CMake/releases/download/v3.17.3/cmake-3.17.3.tar.gz cd /opt/ tar -zxf cmake-3.17.3.tar.gz mv cmake-3.17.3 cmake-3.17.3-src cd cmake-3.17.3-src/ # 或者 Install an OpenSSL development package vim CMakeLists.txt 添加 set(CMAKE_USE_OPENSSL OFF) # 配置安装路径 ./bootstrap --prefix=/opt/cmake-3.17.3 # 编译安装 make && make install # 新版本 gdb # 下载 curl -o /opt/gdb-8.3.1.tar.gz https://mirrors.ustc.edu.cn/gnu/gdb/gdb-8.3.1.tar.gz cd /opt/ tar -zxf gdb-8.3.1.tar.gz mv gdb-8.3.1 gdb-8.3.1-src cd gdb-8.3.1-src/ # 配置安装路径 ./configure --prefix=/opt/gdb-8.3.1 # 编译安装 make && make install
end