我们经常会需要在文件夹里寻找符合某些条件的文件。
如修改于某一个时间段，具有特定名称，特定大小，等。
下列命令提供了一些寻找这些文件的方法。

Find file among special time range

  find -newermt '2015-01-23'    #  find files newer than the 2015-01-23, include 2015-01-23
  find ! -newermt '2015-01-23'  #  Here the "!" means "NOT", so, this will find files earlier than 2015-01-23, and not include '2015-01-23', since its the reverse supplement of the previous command.
  find  -newermt '2015-01-23' ! -newermt '2015-01-24'   # This command will find the file modified just in '2015-01-23'

if a file is created on "2015-03-01 00:00:00", find -newermt '2015-03-01' won't get it(On Unix find, Linux find untested).

Find files using both time, size, name conditions

Search file modified between 12-05 08:00:00 to 12-06 00:00:00, with the file size greater than 10MB and samller than 20MB, containing word "quirk" in the file name

  find -newermt '2014-12-05 8' ! -newermt '2014-12-06' -size +10M -size -20M -name "*quirk*"

Find files and list them by modified time order

Find files with word "dwarf" in file name and list them out by last modify time

  find -name "*dwarf*" -exec stat -c "%y %n" {} \; | sort

Find file files with particular size print out their total disk usage

  find -type f -size +5M -exec du {} \; | awk '{total += $1} END {print total}'

Find file files with particular size and delete them

  find -type f -size +5M -delete
  find -type f -size 0k -delete     # delete all empty files

Find files in a specified directory depth

Find file cotains "pinche" only on the first level

  find -name "*pinche*" -maxdepth 1

Find things doesn't satisfied condition

Find something does not match the option, at here files whose name doesnn't contain master, but you can use ! on other options, such as time, size.

  find -! -name "*master*"

Find specified file type

Find directory with name containling config in all directories of system

  find / -type d -name '*config*'

Find files in target directories and mv them to a new directory

  find "dir_pattern" -type f -name "file_pattern" -exec mv {} /path/to/new_dir \;
  find . -type d -name "dir_pattern" -exec bash -c 'mv "{}" /path/to/new_dir' \;

bash -c treat the string afterwards as a command, here {} is the result of the find command

find