定时 bash 函数
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Timing bash functions
提问by Alan W. Smith
I'd like to see how long it takes for a bash function to run. After doing a little research, I've come up with this approach which uses a sub-shell:
我想看看 bash 函数运行需要多长时间。在做了一些研究之后，我想出了这种使用子外壳的方法：
function test-function() {
time (
rsync -av ~/tmp/test-dir-start/ ~/tmp/test-dir-end/
rsync -av ~/tmp/test-dir-start/ ~/tmp/test-dir-end-2/
# etc...
)
}
Are there alternate/better ways to time bash functions?
是否有替代/更好的方法来计时 bash 功能？
Update: I'm want the timecall to be embedded in the function so that it runs every time without having to do time test-function. I should have been more clear on that.
更新：我希望将time调用嵌入到函数中，以便它每次都运行而无需执行time test-function. 我应该更清楚这一点。
回答by jordanm
You can use command grouping rather than a subshell:
您可以使用命令分组而不是子shell：
time { command1; command2; }
Update - more specific example:
更新 - 更具体的例子：
test-function() {
time {
rsync -av ~/tmp/test-dir-start/ ~/tmp/test-dir-end/
rsync -av ~/tmp/test-dir-start/ ~/tmp/test-dir-end-2/
# etc...
}
}
