watch [options] [command] Watch command examples Using watch command without any options will use the default parameter of 2.0 second refresh intervals. As I mentioned before, one of the more common uses is mon
Linux watch Command Overview Thewatchcommand is a built-in Linux utility used for running user-defined commands at regular intervals. It temporarily clears all the terminal content and displays the output of the attached command, along with the current system date and time. By default, thewatchco...
linux command --- watch(周期运行指定命令) watch命令以周期性的方式执行给定的指令,指令输出以全屏方式显示。watch是一个非常实用的命令,基本所有的Linux发行版都带有这个小工具,如同名字一样,watch可以帮你监测一个命令的运行结果,省得你一遍遍的手动运行。 watch(选项)(参数) -n:指定指令执行的间隔时间(秒); ...
默认情况下,watch每隔两秒执行一次command, 直到用户按下 Ctrl+C . 以uptime命令为例: $ watch uptime interval是执行command的时间间隔, 默认两秒, 可通过选项-n(--interval seconds) 设定; 最上面的一行称为header, 显示执行命令的时间间隔, 执行的命令, 系统hostname和日期时间. 要关闭header, 使用-t(--no...
When we work on the Linux command line, sometimes we want to execute a command periodically and check the output of each execution. Thewatchcommand can help us with that. In this tutorial, we’ll learn this command together through some examples. ...
Using the Linux watch command with a pipe Usewatchas a clock As you've probably noticed by now, thewatchcommand shows the time that the command was executed in the upper right corner of the terminal window. We can usewatchas a simple clock by passing an empty command line argument. We ...
How to use watch command in Linux ? We are going to add few examples here, for better explanation about watch command, so that you can understand how to use in critical situations. Free command have a option to get the output at a regular intervals but its not much good compare with to...
FreeBSD和Linux下watch命令的不同,在Linux下,watch是周期性的执行下个程序,并全屏显示执行结果,如:watch -n 1 -d netstat -ant,而在FreeBSD下的watch命令是查看其它用户的正在运行的操作,watch允许你偷看其它terminal正在做什么,该命令只能让超级用户使用。
Note that POSIX option processing is used (i.e., option processing stops at the first non-option argument). This means that flags after command don’t get interpreted by watch itself. EXAMPLES To watch for mail, you might do: watch -n 60 from ...
Non-printing characters are stripped from program output. Use "cat -v" as part of the command pipeline if you want to see them. 其实很简单,就是利用linux下的 watch 工具来做监控,方法如下: [yejr@localhost imysql]# watch -d -n 10 "egrep ’MySQL thread|Log|Modified db pages’ innodb_st...