Point 1: To check and list disk usage of /var/log directory is given below
# du -hx /var/log --max-depth=1
0 /var/log/ntpstats 57M /var/log/sa 288K /var/log/tuned 39M /var/log/audit 0 /var/log/chrony 112K /var/log/xcat 3.2M /var/log/anaconda 0 /var/log/rhsm 12K /var/log/Lenovo_Support
Point 2: Sort out and list disk usage in /var/log is given below
# du -hx /var/log --max-depth=1 |sort -h
0 /var/log/chrony 0 /var/log/ntpstats 0 /var/log/rhsm 12K /var/log/Lenovo_Support 112K /var/log/xcat 288K /var/log/tuned 3.2M /var/log/anaconda 39M /var/log/audit 57M /var/log/sa 108M /var/log
Point 3: Show last modification time and sort it by usage
# du -hx /var/log -d 1 --time -a --max-depth=1 |sort -h
0 2017-04-13 05:24 /var/log/ntpstats 0 2017-08-04 05:27 /var/log/chrony 0 2018-03-30 03:21 /var/log/tallylog 0 2018-03-30 03:27 /var/log/rhsm 0 2018-03-30 06:21 /var/log/opensm-activity.dump 0 2019-05-07 18:39 /var/log/opensm.log 0 2019-09-30 03:36 /var/log/spooler-20191006 0 2019-10-01 03:17 /var/log/btmp-20191101 0 2019-10-06 03:41 /var/log/spooler-20191013 0 2019-10-13 03:43 /var/log/maillog-20191021 0 2019-10-13 03:43 /var/log/spooler-20191021 0 2019-10-21 03:28 /var/log/maillog-20191027 0 2019-10-21 03:28 /var/log/spooler-20191027 0 2019-10-24 03:30 /var/log/boot.log-20191024 0 2019-10-25 03:30 /var/log/boot.log-20191025 0 2019-10-26 03:11 /var/log/boot.log-20191026 0 2019-10-27 03:07 /var/log/boot.log-20191027 0 2019-10-27 03:07 /var/log/spooler 0 2019-10-28 03:48 /var/log/boot.log-20191028 0 2019-10-29 03:28 /var/log/boot.log-20191029 0 2019-11-01 10:29 /var/log/boot.log 0 2019-11-01 10:29 /var/log/boot.log-20191101 0 2019-11-01 10:29 /var/log/btmp 4.0K 2018-03-30 03:21 /var/log/grubby_prune_debug 4.0K 2018-03-30 05:08 /var/log/grubby 4.0K 2019-02-25 03:06 /var/log/opensm.log-20190225.gz 4.0K 2019-02-25 19:31 /var/log/opensm.log-20190303.gz 4.0K 2019-04-07 23:25 /var/log/opensm.log-20190408.gz 4.0K 2019-05-07 17:10 /var/log/opensm.log-20190507.gz 4.0K 2019-10-14 17:30 /var/log/secure-20191021 4.0K 2019-10-24 20:06 /var/log/yum.log 4.0K 2019-11-01 15:41 /var/log/secure 8.0K 2018-09-10 15:01 /var/log/centrifydc-install.log 8.0K 2019-10-02 12:02 /var/log/secure-20191006 8.0K 2019-10-24 22:24 /var/log/secure-20191027 8.0K 2019-11-01 15:30 /var/log/maillog 12K 2018-03-30 13:41 /var/log/Lenovo_Support ..... ..... ..... 39M 2019-10-29 06:00 /var/log/audit 57M 2019-11-01 16:20 /var/log/sa 108M 2019-11-01 16:20 /var/log