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[=<permanent>] 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 <secs> 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。
{{o.name}}
{{m.name}}