Linuxwatch命令

　　Linux watch  命令可以动态监测一个命令的运行结果，常见用法如下： root@ubuntu:/home/run/code# watch -h  Usage:  watch [options] command  Options:   -b, --beep             beep if command has a non-zero exit   -c, --color            interpret ANSI color and style sequences   -d, --differences[=]                          highlight changes between updates     ## 高亮显示变化   -e, --errexit          exit if command has a non-zero exit   -g, --chgexit          exit when output from command changes   -n, --interval   seconds to wait between updates  ## 间隔时间，以秒为单位   -p, --precise          attempt run command in precise intervals   -t, --no-title         turn off header   -x, --exec             pass command to exec instead of ＂sh -c＂   -h, --help     display this help and exit  -v, --version  output version information and exit  For more details see watch(1).
　　举例：
　　动态监测 CPU  温度变化，命令： ## 每隔1秒，显示soc的温度(除以1000)，并高亮显示变化部分 root@linaro-alip:# cat /sys/class/thermal/thermal_zone0/type soc-thermal root@linaro-alip:/# watch -n 1 -d cat /sys/class/thermal/thermal_zone0/temp Every 1.0s: cat /sys/class/thermal/the...  linaro-alip: Mon Aug 16 14:49:27 2021  31666  ## 每隔1秒，显示gpu的温度，并高亮显示变化部分 root@linaro-alip:# cat /sys/class/thermal/thermal_zone1/type gpu-thermal root@linaro-alip:/# watch -n 1 -d cat /sys/class/thermal/thermal_zone1/temp Every 1.0s: cat /sys/class/thermal/the...  linaro-alip: Mon Aug 16 14:49:39 2021  32777
　　上面测试例子基于 RockPi 4A Linux4.4  内核。