Question

我希望能够在linux终端中执行一个jar文件，该文件将运行一系列命令，以便在服务器上安装多个程序。目标是自动化一些安装过程，因为我们进行了许多安装以进行测试。我有以下代码：

public class test 
{
    public static void main(String[] args)
    {
        Runtime rt = Runtime.getRuntime();
        String cmd;

        cmd = "/bin/sh -c yum install -y rpm-build";
        rt.exec(cmd);
    }
}

当我运行它时，没有任何反应。如果我只是运行“yum install -y rpm-build”它运行正常，但如果我运行jar就可以了。我做错了什么？

以下代码/评论的错误流：

    root@netBoot labStats]# java test 
Loaded plugins: fastestmirror
Usage: yum [options] COMMAND

List of Commands:

check          Check for problems in the rpmdb
check-update   Check for available package updates
clean          Remove cached data
deplist        List a package's dependencies
distribution-synchronization Synchronize installed packages to the latest available versions
downgrade      downgrade a package
erase          Remove a package or packages from your system
groupinfo      Display details about a package group
groupinstall   Install the packages in a group on your system
grouplist      List available package groups
groupremove    Remove the packages in a group from your system
help           Display a helpful usage message
history        Display, or use, the transaction history
info           Display details about a package or group of packages
install        Install a package or packages on your system
list           List a package or groups of packages
load-transaction load a saved transaction from filename
makecache      Generate the metadata cache
provides       Find what package provides the given value
reinstall      reinstall a package
repolist       Display the configured software repositories
resolvedep     Determine which package provides the given dependency
search         Search package details for the given string
shell          Run an interactive yum shell
update         Update a package or packages on your system
upgrade        Update packages taking obsoletes into account
version        Display a version for the machine and/or available repos.


Options:
  -h, --help            show this help message and exit
  -t, --tolerant        be tolerant of errors
  -C, --cacheonly       run entirely from system cache, don't update cache
  -c [config file], --config=[config file]
                        config file location
  -R [minutes], --randomwait=[minutes]
                        maximum command wait time
  -d [debug level], --debuglevel=[debug level]
                        debugging output level
  --showduplicates      show duplicates, in repos, in list/search commands
  -e [error level], --errorlevel=[error level]
                        error output level
  --rpmverbosity=[debug level name]
                        debugging output level for rpm
  -q, --quiet           quiet operation
  -v, --verbose         verbose operation
  -y, --assumeyes       answer yes for all questions
  --version             show Yum version and exit
  --installroot=[path]  set install root
  --enablerepo=[repo]   enable one or more repositories (wildcards allowed)
  --disablerepo=[repo]  disable one or more repositories (wildcards allowed)
  -x [package], --exclude=[package]
                        exclude package(s) by name or glob
  --disableexcludes=[repo]
                        disable exclude from main, for a repo or for
                        everything
  --obsoletes           enable obsoletes processing during updates
  --noplugins           disable Yum plugins
  --nogpgcheck          disable gpg signature checking
  --disableplugin=[plugin]
                        disable plugins by name
  --enableplugin=[plugin]
                        enable plugins by name
  --skip-broken         skip packages with depsolving problems
  --color=COLOR         control whether color is used
  --releasever=RELEASEVER
                        set value of $releasever in yum config and repo files
  --setopt=SETOPTS      set arbitrary config and repo options

  Plugin Options:
------ Std Err -------
Failed

最后得益于JtheRocker。这是工作代码，以防其他人遇到同样的问题。

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;



public class test 
{
    public static void main(String[] args) throws IOException, InterruptedException
    {
        Runtime rt = Runtime.getRuntime();
        String cmd[] = new String[] {"yum", "install", "-y", "rpm-build"};
        Process ps = rt.exec(cmd);

        BufferedReader readerStd = new BufferedReader(new InputStreamReader(ps.getInputStream()));  

        BufferedReader readerErr = new BufferedReader(new InputStreamReader(ps.getInputStream()));  

        String line = null;  
        while ((line = readerStd.readLine()) != null) {  
            System.out.println(line);  
        }  
        System.out.println("------ Std Err -------");
        while ((line = readerErr.readLine()) != null) {  
            System.out.println(line);  
        }

        if (ps.waitFor()==0) {
            System.out.println("success");
        } else {
            System.out.println("Failed");
        } 
    }
}

Answer 1

试试这个：

public class test 
{
    public static void main(String[] args)
    {
        Runtime rt = Runtime.getRuntime();
        String cmd[] = new String[] {"yum",  "-y", "install", "rpm-build"};
        Process ps = rt.exec(cmd);

        BufferedReader readerStd = new BufferedReader(new InputStreamReader(ps.getInputStream()));  

        BufferedReader readerErr = new BufferedReader(new InputStreamReader(ps.getInputStream()));  

        String line = null;  
        while ((line = readerStd.readLine()) != null) {  
            System.out.println(line);  
        }  
        System.out.println("------ Std Err -------");
        while ((line = readerErr.readLine()) != null) {  
            System.out.println(line);  
        }

        if (ps.waitFor()==0) {
            System.out.println("success");
        } else {
            System.out.println("Failed");
        } 
    }
}

如何从jar文件中在linux命令行中安装yum？

1 个答案: