document/TranslateProject
2
0
Fork 0
mirror of https://github.com/LCTT/TranslateProject.git synced 2025-01-25 23:11:02 +08:00
Code Issues Packages Projects Releases Wiki Activity

Update 20151109 How to Monitor the Progress of a Linux Command Line Operation Using PV Command.md

Browse Source
This commit is contained in:
Ezio 2015-11-20 20:51:20 +08:00
parent d38dc492d8
commit 2dde570650
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
sources/tech/20151109 How to Monitor the Progress of a Linux Command Line Operation Using PV Command.md
View File

@ -1,17 +1,20 @@
translating by ezio
How to Monitor the Progress of a Linux Command Line Operation Using PV Command
如何监控linux 命令行的命令执行进度
================================================================================
![](https://www.maketecheasier.com/assets/uploads/2015/11/pv-featured-1.jpg)
If you’re a Linux system admin, there’s no doubt that you must be spending most of your work time on the command line – installing and removing packages; monitoring system stats; copying, moving, deleting stuff; debugging problems; and more. There are times when you fire a command, and it takes a while before the operation completes. However, there are also times when the command you executed just hangs, leaving you guessing as to what’s actually happening behind the scenes.
如果你是一个linux 系统管理员，那么毫无疑问你必须花费大量的工作时间在命令行上：安装和卸载软件，监视系统状态，复制、移动、删除文件，查错，等等。很多时候都是你输入一个命令，然后等待很长时间直到执行完成。也有的时候你执行的命令挂起了，而你只能猜测命令执行的实际情况。
Usually, Linux commands provide no information related to the progress of the ongoing operation, something that is very important especially when you have limited time. However, that doesn’t mean you’re helpless – there exists a command, dubbed pv, that displays useful progress information related to the ongoing command line operation. In this article we will discuss this command as well as its features through some easy-to-understand examples.
通常linux命令不提供和进度相关的信息，而这些信息特别重要，尤其当你只有有限的时间时。然而这并不意味着你是无助的-现在有一个命令，pv，他会显示当前在命令行执行的命令的进度信息。在本文我们会讨论它并用几个简单的例子说明种特性。
### PV Command ###
### PV 命令 ###
Developed by Andrew Wood, [PV][1] – which stands for Pipe Viewer – displays information related to the progress of data through a pipeline. The information includes time elapsed, percentage completed (with progress bar), current throughput rate, total data transferred, and ETA.
> “To use it, insert it in a pipeline between two processes, with the appropriate options. Its standard input will be passed through to its standard output and progress will be shown on standard error,”
The above explains the command’s man page.