我想制作一个shell脚本，它将有效地从输出到控制台的sterr和stin中获取最后的n行。我有一个屏幕会话运行一个进程，如果它通过一个奇怪的无限循环崩溃将重新启动：
原文链接：/bash/387617.html#!/bin/bash
#This script will be started in a screen session
counter=0
while [ $counter -lt 10 ]; do
./run_some_process;
last_output=#GRAB PREVIoUS OUTPUT FROM CONSOLE HERE AND LOG TO FILE
echo -e "$last_output" >> mylog.txt;
sleep 5; #sleep for a few seconds before restarting
done
