bash 如何使用 ls 在 Unix 中查找特定日期集的文件
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How to use ls to find files for a specific set of dates in Unix
提问by Shash
I have a set of files in a directory. I need to find files for a set of specific dates (For example if i need files from 16th Jan to 20th Jan). I tried using ls -ltr | grep <date>but it is taking too many steps to accomplish selecting the files. Is there any easier way to get this done. Thanks!
我在一个目录中有一组文件。我需要查找一组特定日期的文件（例如，如果我需要从 1 月 16 日到 1 月 20 日的文件）。我尝试使用，ls -ltr | grep <date>但完成选择文件需要太多步骤。有没有更简单的方法来完成这项工作。谢谢！
回答by paxdiablo
I'm not sure how many files you have in yourdirectory but something like this should be blindingly fast:
我不确定您的目录中有多少文件，但这样的事情应该非常快：
ls -al | awk ' == "Jan" && >= 16 && <= 20 {print }'
On my system, I see the following with dates slightly modified:
在我的系统上，我看到以下日期略有修改：
pax> ls -al | awk ' == "Jan" && >= 16 && <= 29 {print }'
kids_shares.ods
our_savings.gnumeric
photos
pax> ls -ald kids_shares.ods our_savings.gnumeric photos
-rw-r--r-- 1 pax pax 51005 Jan 29 19:39 kids_shares.ods
-rw-r--r-- 1 pax pax 2275 Jan 28 14:48 our_savings.gnumeric
drwxrwxrwx 130 pax pax 4096 Jan 29 21:47 photos
You can see that the dates match for the given files.
您可以看到给定文件的日期匹配。
One thing to watch out for: if the file is recent, it will have a time in column 8. Beyond some age, lsstarts putting the year in there. I have the vague recollection that it's somewhere around the six-month-old border but I'm not absolutely certain. You'll need to cater for that as well.
需要注意的一件事：如果文件是最近的，它会在第 8 列中显示时间。超过某个年龄，ls开始将年份放在那里。我模糊地记得它在六个月大的边界附近的某个地方，但我并不确定。你也需要照顾到这一点。
回答by wich
回答by Steve
You're better off using find. Start by creating two temp files with specific times to search between. touchcan do this:
你最好使用find. 首先创建两个具有特定时间搜索的临时文件。touch可以这样做：
touch -t "201301160001" ./start
touch -t "201301202359" ./finish
Then run find:
然后运行find：
find /path/to/files -type f -newer ./start ! -newer ./finish
