Delete files if number exceeds 30 in number for different files in same directory

Question

The folder gets populated some jobs that run daily, weekly or monthly. For eg. daily job outputs be like:

daily-2017-16-08.txt
daily-2017-15-08.txt

Weekly be like:

weekly-2017-01-08.txt
weekly-2017-08-08.txt

and monthly is like:

monthly-2017-01-08.txt
monthly-2017-01-07.txt

You mean 2nd field which is representing date like 16,15,01 should not be exceeded number 30 ? — Rahul, Aug 17 '16 at 19:36
total number of daily should not exceed 30, similarly for weekly and monthly — Yogesh, Aug 18 '16 at 11:45

Zachary Brady · Answer 1 · 2016-08-16T19:32:23.447

0

Something like this?

#!/bin/bash
for FILE_TYPE in daily weekly monthly 
do
     COUNTER=0
     for FILE in $(ls -t ${FILE_TYPE}-*)
     do
        let COUNTER++
        [ ${COUNTER} -gt 30 ] && rm ${FILE}
     done
done

edited Aug 16 '16 at 19:32

answered Aug 16 '16 at 19:11

Zachary Brady

4,240

see: Why not parse ls? – Cyrus Aug 16 '16 at 19:25
Updated to not parse ls output as recommended by @Cyrus – Zachary Brady Aug 16 '16 at 19:32
Is there a way to modify your code so that it automatically takes different file types, without me specifying it? – Yogesh Aug 17 '16 at 19:33
I'm not sure I totally understand what you mean by "automatically takes" but you could change the for line to look like for FILE_TYPE in $@ and then you call the shell script like cleanupProgram.sh daily weekly monthly in cron and if you ever wanted to add or remove file types you just modify the cron entry. – Zachary Brady Aug 17 '16 at 19:46

Delete files if number exceeds 30 in number for different files in same directory

1 Answers1