linux의 watch 명령어는 특정 명령어를 반복하여 실행할 때 유용한 명령어 입니다.
$> watch -n 3 df 간단한 쉘스크립트를 이용해도 비슷한 효과를 볼 수 있습니다.
$> while true \n do \n df \n sleep 3 \n done help watch $> watch --help 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 For more details see watch(1 Usage: uptime [options] Options: -p, --pretty show uptime in pretty format -h, --help display this help and exit -s, --since system up since -V, --version output version information and exit For more details see uptime(1).
