Shell脚本循环和删除

Question

Could someone help me on this.I have below folder structure as shown below .I want to loop through every folder inside the backuptest and delete all the folders except today date folder.i want it run as a cron job

Answer 1

Use find for this:

today="$(date +%Y-%m-%d)"
find /path/to/backuptest/Server* -mindepth 1 -maxdepth 1 -type d -not -name "$today" -exec rm -R {} \;

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Edit

To not delete directories other than those containing a date structure, use something like

find /path/to/backuptest/Server* -mindepth 1 -maxdepth 1 -type d  -regex ".*2016-[0-1]*[0-9]-[0-3][0-9]$" -not -name "$today"

Answer 2

You can do it with find:

set date=`date +%Y-%m-%d`
find backuptest -type d -not -name $date -not -name "backuptest" -not -name "Server*" -exec rm -rf {} \;

This:

find backuptest -type d -not -name $date -not -name "backuptest" -not -name "Server*"

will look for directories name different than:

backuptest
Server*
$date -> current date

and remove them with:

rm -rf 

Answer 3

You can get today's date in whatever format you require via the date command. For example,

TODAY=$(date +%Y-%m-%d)

You can loop over the subfolders you want with a simple wildcard match:

for d in /path/to/backuptest/*/*; do
  # ...
done

You can strip the directory portion from a file name with the basename command:

name=$(basename path/to/file)

You can glue that together something like this:

#!/bin/bash

TODAY=$(date +%Y-%m-%d)

for d in /path/to/backuptest/*/*; do
  test "$(basename "$d")" = "$TODAY" || rm -rf "$d"
done

Update:

If you don't actually want to purge all subfolders except today's, but rather only those matching some particular name pattern, then one way to accomplish that would be to insert that pattern into the glob in the for command. For example, here

for d in /path/to/backuptest/*/+([0-9])-+([0-9])-+([0-9]); do
  test "$(basename "$d")" = "$TODAY" || rm -rf "$d"
done

the only files / directories considered for deletion are those whose names consist of three nonempty, hyphen-separated strings of decimal digits. One could write patterns that more precisely match date string format if one preferred, but it does get messier the more discriminating you want the pattern to be.