linux watch命令
watch可以帮你监测一个命令的运行结果,来监测你想要的一切命令的结果变化
watch -n 1 -d "命令"
每隔一秒高亮显示后面命令的变化
watch -d 'ls -l'
# 每隔一秒高亮显示当前目录变化
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
-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
-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