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重庆渝北网站建设,seo排名优化推广报价,中国公司排行榜,建筑人才招聘网最新招聘实用 Unix/Linux 系统管理脚本解析 1. 环境验证脚本（validator） 在 Unix/Linux 系统中，环境变量的正确设置至关重要。环境验证脚本 validator 可以帮助用户快速检查自身环境是否存在问题。 if [ ! -d ${HOME:?You need to have your HOME set to your home dir…实用 Unix/Linux 系统管理脚本解析1. 环境验证脚本（validator）在 Unix/Linux 系统中，环境变量的正确设置至关重要。环境验证脚本validator可以帮助用户快速检查自身环境是否存在问题。if [ ! -d ${HOME:?"You need to have your HOME set to your home directory"} ] then echo "** HOME set to $HOME, but it's not a directory." errors=$(( $errors + 1 )) fi # Our first interesting test: Are all the paths in PATH valid? oldIFS=$IFS; IFS=":" # IFS is the field separator. We'll change to ':'. for directory in $PATH do if [ ! -d $directory ] ; then echo "** PATH contains invalid directory $directory." errors=$(( $errors + 1 )) fi done IFS=$oldIFS # Restore value for rest of script. # The following variables should each be a fully qualified path, # but they m