java如何调用linux命令

本是古典何须时尚 2022-05-14 01:34 200阅读 0赞

package com.huateng.util;
    
    import java.io.*;
    import java.util.ArrayList;
    import java.util.List;
    
    public class LinuxUtil {
    
        public static void main(String[] args) {
            String cmd = "sort -t,  -k2n,2  -k1,1   aa";
            LinuxUtil.exec(cmd);
    
            List<String> commands = new ArrayList<>();
            commands.add("cd /home/whj/tmp/hello");
            commands.add("sort -t,  -k2n,2  -k1,1   aa");
            commands.add("sort -t,  -k2n,2  -k1,1   aa > vv");
            LinuxUtil.execFlow(commands);
        }
    
    
        public static Object execFlow(List<String> commands) {
            try {
                String cmds = "";
                for (String cmd : commands) {
                    cmds += cmd + ";";
                }
                String[] cmdA = {"/bin/sh", "-c", cmds};
                Process process = Runtime.getRuntime().exec(cmdA);
                LineNumberReader br = new LineNumberReader(new InputStreamReader(
                        process.getInputStream()));
                StringBuffer sb = new StringBuffer();
                String line;
                while ((line = br.readLine()) != null) {
                    System.out.println(line);
                    sb.append(line).append("\n");
                }
                return sb.toString();
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }
    
        public static Object exec(String cmd) {
            try {
                String[] cmdA = {"/bin/sh", "-c", cmd};
                Process process = Runtime.getRuntime().exec(cmdA);
                LineNumberReader br = new LineNumberReader(new InputStreamReader(
                        process.getInputStream()));
                StringBuffer sb = new StringBuffer();
                String line;
                while ((line = br.readLine()) != null) {
                    System.out.println(line);
                    sb.append(line).append("\n");
                }
                return sb.toString();
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }
    
    
    }