Update pv.md
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@ -84,16 +84,46 @@ linux [master●] % pv ~/Downloads/CentOS-7-x86_64-Minimal-1511.iso > ~/Desktop/
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pv -L 2m /media/himanshu/1AC2-A8E3/fNf.mkv > ./Desktop/fnf.mkv
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```
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复制文件时显示进度条(如果没有指定选项,默认使用 -p, -t, -e, -r 和 -b 选项)
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```bash
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$ pv getiot.db > getiot.db.bak
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```
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将 `/var/log/syslog` 文件打包成 zip 压缩包,并显示进度
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```bash
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$ pv /var/log/syslog | zip > syslog.zip
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```
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使用 tar 命令解压缩时显示进度条
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```bash
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$ pv rootfs.tar.bz2 | tar -jxf - -C rootfs/
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12.3MiB 0:00:02 [6.15MiB/s] [=========> ] 21% ETA 0:00:07
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````
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解压完成
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```bash
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$ pv rootfs.tar.bz2 | tar -jxf - -C rootfs/
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57.8MiB 0:00:10 [5.53MiB/s] [==============================================>] 100%
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```
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字符一个个匀速在命令行中显示出来
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```shell
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# 字符一个个匀速在命令行中显示出来
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echo "Tecmint[dot]com is a community of Linux Nerds and Geeks" | pv -qL 10
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```
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# 压缩文件展示进度信息
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压缩文件展示进度信息
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```shell
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pv /media/himanshu/1AC2-A8E3/fnf.mkv | gzip > ./Desktop/fnf.log.gz
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```
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用 dd 命令将 iso 写入磁盘,pv来实现进度条的显示
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# 用 dd 命令将 iso 写入磁盘,pv来实现进度条的显示
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```shell
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sudo pv -cN source < /Users/kacperwang/Downloads/CentOS-7-x86_64-Everything-1511.iso | sudo dd of=/dev/disk2 bs=4m
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## 显示下面进度
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source: 5.2GiB 5:11:41 [ 503KiB/s] [=====================> ] 71% ETA 2:01:56
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