Command to find how much is the space in that directory leaving the files created in last 7 days. Without using `find`

Question

I don't have appropriate access to the system in order to run the privileged find command. So I am trying to get a string of commands possibly using grep or awk or anything that could list me the files that where NOT created within last 7 days and how much space are they consuming.

I came up with this command du -h | grep ^[0-9.]*G du -h | grep ^[0-9.]*G now I need to know how can I list which once are more than 7 days older.

Output of the above command is:

du: cannot read directory `./lost+found': Permission denied
1.5G    ./portal/portal-internal-crons/get_portal_logs/p3-proxy1.extranet.akamai.com
1.5G    ./portal/portal-internal-crons/get_portal_logs/p3-proxy2.extranet.akamai.com
1.5G    ./portal/portal-internal-crons/get_portal_logs/p3-proxy5.extranet.akamai.com
1.5G    ./portal/portal-internal-crons/get_portal_logs/p3-proxy6.extranet.akamai.com
1.1G    ./portal/portal-internal-crons/get_portal_logs/p3-sp01.extranet.akamai.com
1.2G    ./portal/portal-internal-crons/get_portal_logs/p3-sp02.extranet.akamai.com
1.5G    ./portal/portal-internal-crons/get_portal_logs/p3-proxy7.extranet.akamai.com
1.5G    ./portal/portal-internal-crons/get_portal_logs/p3-proxy8.extranet.akamai.com
1.1G    ./portal/portal-internal-crons/get_portal_logs/p3-sp03.extranet.akamai.com
1.1G    ./portal/portal-internal-crons/get_portal_logs/p3-sp04.extranet.akamai.com
1.5G    ./portal/portal-internal-crons/get_portal_logs/p3-proxy3.extranet.akamai.com
1.5G    ./portal/portal-internal-crons/get_portal_logs/p3-proxy4.extranet.akamai.com
18G ./portal/portal-internal-crons/get_portal_logs
18G ./portal/portal-internal-crons
18G ./portal
19G .

Answer 1

In case you can run ls -lR --time-style=+%s on the target, you could:

ls -lR --time-style=+%s | awk -v now=$(date +%s) '/^-/ && now - $6 > 7*24*3600 {s += $5} END {print s}'

Explanation: ls -lR --time-style=+%s produces this kind of output:

.:
total 7168
drwxr-xr-x 2 john doe    4096 1439992030 dira
drwxr-xr-x 2 john doe    4096 1441870671 dirb
-rw-r--r-- 1 john doe   43980 1436264423 filea
-rw-r--r-- 1 john doe   15941 1436264418 fileb
-rw------- 1 john doe 7193171 1439374938 filec
-rw-r--r-- 1 john doe    2927 1436264418 filed

./dira:
total 8
-rw-r--r-- 1 john doe 1205 1439991207 filea
-rw-r--r-- 1 john doe  142 1439990672 fileb

./dirb:
total 4
-rw-r--r-- 1 john doe 116 1441870658 filea

where the last modification date is a timestamp in seconds. The awk code selects the lines corresponding to files (first field starting with - ) which timestamp is more than 7 days in the past. It accumulates the sizes (field number 5) of the selected lines and prints the sum at the end. The age of a file is computed as the difference between the current timestamp ( awk variable now ) and the file's timestamp (field number 6). The current timestamp is passed to awk as variable now with the -v now=$(date +%s) option.