No longer worry about huge Log Files: General log rolling script

650) this. width = 650; "border =" 0 "src =" http://www.bkjia.com/uploads/allimg/131228/164P62928-0.gif "style =" padding: 0px; margin: 0px; vertical-align: top; border: none; "alt =" "/> log_rotater.sh

#! /Bin/sh # Writed by yijian on 2012/7/22 # This script function: #1) implement a general log rolling by size #2) the log file extension must be ". log, otherwise, please slightly modify the code #3) support processing log files under multiple directories, if you need to use this function, # The dirs_list parameter must be enabled # Why do you need to write such a thing? # A: in daily life, the program output redirection is often found. # Or the Script output. If not processed, the # single file may be too large or even full of the entire disk; every script # repeatedly writes a log rolling logic, which is obviously boring. # Even some people are too lazy to handle it. After a long time, they will find a huge # log file, this script is intended to help solve this problem, so that everyone has no worries. # Usage: #1) copy the script to the directory where the log file is located, # Use nohup. /log_rotater.sh>/dev/null & other methods to start the script #2) In addition to the above method, you can also put log_rotater.sh under any directory, # But at this time, modify the value of backup_dir to the directory where the log file is located # sudo dpkg-reconfigure dash # The New Ubuntu version uses dash as shell by default. # This shell function is weak and does not support arrays, but the speed is fast. # You can use the following method to check the shell: # ls-l 'which Sh' # Modify the following parameters as neededBackup_count = 10 # Number of log scrolling backup_size = $ (1024*1024*200) # size of a single log file backup_interval = 60 # interval of detection, the Unit is seconds # if a file specified by dirs_list exists, the directory is read from dirs_list. # Otherwise, only a single directory specified by backup_dir is processed. # When a directory is added to a specified file in dirs_list, log_rotater.shbackup_dir =. # dirs_list =. /dirs. list # A directory is required for storing the files in the directory list. # Process log scrolling in a single directoryScan_single_dir () {dir = $ 1cd $ dirif test $? -Ne 0; thenreturnfi # eval $ (ls-l -- time-style = long-iso *. log 2>/dev/null | awk '{printf ("filesize = % s \ nfiledate = % s \ nfilename = % s \ n", $5, $6, $8);} ') if test $? -Ne 0; thenreturnfiif test-z $ filename; thenreturnfi if test $ filesize-gt $ backup_size; thenfile_index = $ ($ backup_count-1) while test $ file_index-gt 1; donew_filename = "$ {filename }. $ file_index "old_filename =" $ {filename }. $ ($ file_index-1) "if test-f" $ old_filename "; thenmv" $ old_filename "" $ new_filename "fifile_index = $ ($ file_index-1 )) done # Use truncate instead of mv here, # because the inode of the file must remain unchanged cp "$ filename" "$ {filename }. 1 "truncate-s 1024" $ filename "ficd-sleep 1} # Loop detectionWhile true; doif test! -F $ dirs_list; thenscan_single_dir $ backup_direlsewhile read dirpathdoscan_single_dir $ dirpathdone <$ dirs_listfi sleep $ backup_intervaldone

 

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