Question

我有一个用bash编写的相当健壮和准确的OS检测功能，该功能返回分布和派生（我认为其他人可能会发现它有用）。我现在正在考虑如何最好地处理这些输出，以使脚本可以使用适当的软件包管理器自动选择并安装软件包列表，以进行分发。

我的第一个想法是编写一个临时文件并从那里检查输出，但这似乎是处理它的丑陋方法。接下来，我想到了返回不是特殊含义代码的退出代码和一些if / elif逻辑，而我将不去参加比赛，这也感觉像是一种拙劣的方法来完成这项工作。最终的想法是打印到屏幕上并存储为变量，以再次使用if逻辑。

我在堆栈上滚动浏览了类似的问题，还翻阅了Shell Scripting With Bash手册，希望从中获得一些启发，写出一个干净的解决方案。但是可惜没有火花。
任何见解都会有所帮助。

#!/bin/bash
detect_os()
  {
MATCH=`uname -s`

if [ "${MATCH}" = "Linux" ]; then
  linux_distro
elif
   [ "${MATCH}" = "Darwin" ]; then
     printf "DISTRIBUTION=macosx \n"
     printf "VERSION=`uname -r` \n"
fi
  }

redhat_derivative()
  {
  local FILE=/etc/redhat-release

  grep -i 'red.*hat.*enterprise.*linux' $FILE 2>&1 > /dev/null && { printf "DERIVATIVE=rhel \n"; return; }
  grep -i 'red.*hat.*linux' $FILE 2>&1 > /dev/null && { printf "DERIVATIVE=rh \n"; return; }
  grep -i 'centos' $FILE 2>&1 > /dev/null && { printf "DERIVATIVE=centos \n"; return; }
  grep -i 'fedora' $FILE 2>&1 > /dev/null && { printf "DERIVATIVE=fedora \n"; return; }

  printf "DERIVATIVE=unknown \n"
 }

debian_derivative()
{
 if which lsb_release 2>&1 > /dev/null ; then
    printf "DERIVATIVE=`lsb_release --id --short 2> /dev/null` \n"
    return
else
    printf "DERIVATIVE=unknown \n"
    return
fi
  }

arch_derivative()
  {
local FILE=/etc/os-release
    grep -i 'arch' $FILE 2>&1 > /dev/null && { printf "DERIVATIVE=arch \n"; return; }
    grep -i 'manjaro' $FILE 2>&1 > /dev/null && { printf "DERIVATIVE=manjaro \n"; return; }

    printf "DERIVATIVE=unknown \n"
 }

linux_distro()
  {
 if [ -f /etc/redhat-release ]; then
  printf "DISTRIBUTION=redhat \n"
  redhat_derivative
elif [ -f /etc/debian_version ]; then
  printf "DISTRIBUTION=debian \n"
  debian_derivative
elif [ -f /etc/arch-release ]; then
  printf "DISTRIBUTION=arch \n"
  arch_derivative
fi
}

Answer 1

我的个人shell库中有两个（相似）版本（一个用于bash，另一个用于不友好的POSIX shell（我在看你破折号。））我检查/ etc / issue中的Linux版本，（大致）这个：

#!/bin/sh

########
## OS ##
########

os () {
    ISSUE="$(cat /etc/issue)"
    if [ "$(grep -iE 'centos|redhat|yellowdog' /etc/issue)" ]; then
        echo ${ISSUE%% *}
    elif [ "$(grep -iE 'debian|ubuntu' /etc/issue)" ]; then
        echo ${ISSUE%% *}
    fi

}

###############
## installer ##
###############

installer () {
    OS=$(os)
    if [ "$OS" ]; then
         if [ "$OS" = 'Debian' ] || [ "$OS" = 'Ubuntu' ]; then
            echo 'apt-get install -y'
            return 0
        elif [ "$OS" = 'Gentoo' ]; then
            echo 'emerge'
        elif [ "$OS" = 'CentOS' ] || [ "$OS" = 'Redhat' ]; then
            echo 'yum install -y'
        fi
    fi
}
#############
## install ##
#############
#
# generalises automation of install
# in an OS independent way.
# i.e. if Debian, CentOS, Gentoo, Slackware, FreeBDS, OpenSolaris
# this will find a way to install ALL of $@
#

install() {
     eval $(which sudo) $(installer) $1
     [ "$?" -gt 0 ] && echo "Failed to install $1" >&2 && return 0
     return 1
}

Bash软件包自动化/ w OS Detect

1 个答案: