Detailed explanation of the find command (the most common operation of operation and maintenance at the end of the article)

find The command is based on the date and time , jurisdiction , Name, etc. find files and directories
find   Catalog     Parameters  
Common parameters ： 
-name  aa  # lookup aa The file of
-iname  aa # lookup aa Contains upper and lower case letters
-type       # The search file type is ：  f Ordinary documents 、 l A symbolic link 、d Catalog 、b Block device .
-size        # Check files according to size
-amin      # Find last in system N Files accessed in minutes
-mmin      # Find last in system N Files modified in minutes
-mtime   -n +n   # Find files by file change time ,-n finger n Within days ,+n finger n Before the day
-ctime    -n +n    # Find files by file creation time ,-n finger n Within days ,+n finger n Before the day
-user           # Find files belonging to a user
-group        # Find files that belong to a group
-exec： find Command to execute the shell command .

find  /home  -name nginx   # lookup /home The directory is called nginx file 
find  /var/log/    -name cron*    # lookup /var/log Name under the directory  cron Opening file 

find  /var/log/    -size 500M    # lookup /var/log The directory size is 500M The file of 
find /var/log/    -size  +100M  -size -500M    # lookup /var/log Directory greater than 500M Less than 100M The file of 
 find  /var/log    -size +1G  -exec rm -rf {} \;  # lookup /var/log Under the table of contents 1G And use the command to delete 

Commonly used （ combination crontab Timing task ）： /usr/bin/find /data/ -type f -mtime +30 -exec rm {} \;
Delete data Under the table of contents 30 Days ago