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  CentOS achieve trash mechanism
     
  Add Date : 2018-11-21      
         
         
         
  As an operation and maintenance personnel, when you delete files on the server in order to facilitate direct use often rm * .txt such a wildcard, in order to save even add -rf argument, if it is determined, then okay, if in time to delete an inattentive, that things may become significant.

As the saying goes often in the river station defiled, no one can guarantee that you can not make a mistake, but every day in fear of the whole into an obsessive-compulsive disorder is not a thing, so I think on the whole a similar Linux servers Win the Recycle Bin feature.

The following is the script I realized the Recycle Bin, the Recycle Bin is enabled, if you need to delete a file, simply execute "del file name / folder name" to

1 [root @ localhost tools] # tree Trash_1.0 /
2 Trash_1.0 /
3 install_Trash.sh
4 Trash_mkdir.sh

Very simple, two script files, Trash_mkdir.sh is written crontab scheduled tasks in the content, responsible for generating a corresponding date day Trash folder and periodically clean up trash more than five days of the document, that the trash can within five days to retain files you delete, install_Trash.sh automatic configuration script is responsible for regular tasks, user personalization loading configuration.

Trash_mkdir.sh content:

[Root @ localhost Trash_1.0] # cat Trash_mkdir.sh
#! / Bin / bash
month = `date" +% m "` # Get the current month
day = `date" +% d "` # get the current date

last_day = `date -d" -1 day "" +% d "` # Get the day before the month
last_day_m = `date -d" -1 day "" +% m "` # Get the day before the date of

del_day = `date -d" -5 day "" +% d "` # get five days in January
del_day_m = `date -d" -5 day "" +% m "` # Get date five days ago

Trash_dir = "/ tmp / del_bak" # Trash List
tmp_dir = "/ tmp / del_bak / tmp" # delete files daily storage directory
# The following is to create the appropriate directory, and give 777 15 if [! -d $ Trash_dir]
then
    / Bin / mkdir -p $ Trash_dir
    / Bin / chmod 777 $ Trash_dir
fi

if [! -d $ tmp_dir]
then
    / Bin / mkdir -p $ tmp_dir
    / Bin / chmod 777 $ tmp_dir
fi

if [! -d / tmp / del_bak / $ month]
then
    / Bin / mkdir / tmp / del_bak / $ month
    / Bin / chmod 777 / tmp / del_bak / $ month
fi

if [! -d / tmp / del_bak / $ month / $ day]
then
    / Bin / mkdir / tmp / del_bak / $ month / $ day
    / Bin / chmod 777 / tmp / del_bak / $ month / $ day
fi

Trash_file = `/ bin / ls -A $ tmp_dir`

if [ "$ Trash_file"! = ""] # This is the timing in every morning to remove the file into the directory last month and date have been classified under the guarantee / tmp / del_bak / tmp catalog store only files deleted day
then
    cd $ tmp_dir
    if [! -d / tmp / del_bak / $ last_day_m / $ last_day /]
    then
      / Bin / mkdir -p / tmp / del_bak / $ last_day_m / $ last_day /
    fi
    / Bin / mv $ tmp_dir / * / tmp / del_bak / $ last_day_m / $ last_day /
fi

if [-d $ Trash_dir / $ del_day_m / $ del_day /] # clean up deleted files five days
then
    cd $ Trash_dir / $ del_day_m / $ del_day / && {
    / Bin / rm -rf $ Trash_dir / $ del_day_m / $ del_day /
    }
fi

install_Trash.sh contents of the script:

[Root @ localhost Trash_1.0] # cat install_Trash.sh
#! / Bin / bash
USER = `/ usr / bin / whoami` # Get the current user
Path TOOLS = "/ usr / local / tools" # scripts stored Trash_mkdir.sh regular tasks can be modified according to their own personal
HOME_DIR = `/ bin / grep" $ USER "/ etc / passwd | awk -F": " '{print $ 6}'` # Get the current user's home directory
CONF = $ HOME_DIR "/. Bashrc" # stitching current user profile path
Trash = `/ bin / grep" del "$ CONF` # has been configured to determine whether the mechanism of trash

if [ "$ Trash" = ""] # Add alias del Trash
then
    echo "alias del = 'mv -t / tmp / del_bak / tmp / --backup = t'" >> $ CONF
fi

if [! -d $ TOOLS]
then
    / Bin / mkdir -p $ TOOLS
fi

/ Bin / cp Trash_mkdir.sh $ TOOLS # copy scheduled tasks script to a specified directory
/ Bin / chmod + x $ TOOLS / Trash_mkdir.sh

if [-z "` grep 'Trash_mkdir.sh' / var / spool / cron / root` "] # crontab task in judging whether the timing has added a trash script
then
    echo "10 0 * * * $ TOOLS / Trash_mkdir.sh" >> / var / spool / cron / root
fi

/ Bin / sh $ TOOLS / Trash_mkdir.sh # initialize Trash

Deployment instructions:

1, the two scripts in the same directory

2, using the Recycle Bin feature you need to enable users to perform install_Trash.sh script to a key installation

Above is my trash mechanism on CentOS6.5 server implementations, interested friends can discuss improvements.
     
         
         
         
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