Help on a fairly complicated shell script Post: 302997153

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Top Forums Shell Programming and Scripting Help on a fairly complicated shell script Post 302997153 by Chubler_XL on Monday 8th of May 2017 04:06:06 PM

05-08-2017

Moderator

You could try this:

Code:

MM=120
GG=5000
XX=20

# get size of directory
szm=$(du -s --block-size M  ./192.168.1.xxx | awk '{print int($0)}')
data=$(date --rfc-3339=seconds)

if [ $szm -ge $GG ] ; then  # too big delete older files

    find ./192.168.1.199 -type f -mmin +$MM -printf "%T@ %h/%f\\n" |
        sort -rn | head -$XX | sed 's/^[^ ]* //' |
        xargs --no-run-if-empty -d\\n rm
    find ./192.168.1.199 -mindepth 1 -depth -type d -empty -delete

fi

Here we have find print out the epoch modification time and file path like this:

Code:

1494273484.0000000000 ./192.168.1.199/Images/A42301
1494273404.0000000000 ./192.168.1.199/Images/A42310
1494273430.0000000000 ./192.168.1.199/Images/A42317
1494273416.0000000000 ./192.168.1.199/Images/A42322
1494273397.0000000000 ./192.168.1.199/Images/A42336
1494273261.0000000000 ./192.168.1.199/Images/A42344

Then sort on first column with numeric and descending to get oldest files first.
We then pass this to use head to select oldest $XX files, sed to cut off the epoch time and xargs to pass them to the rm command.

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LEARN ABOUT FREEBSD

nos-tun

NOS-TUN(8)						    BSD System Manager's Manual 						NOS-TUN(8)

NAME

     nos-tun -- implement ``nos'' or ``ka9q'' style IP over IP tunnel

SYNOPSIS

     nos-tun -t tunnel -s source -d destination -p protocol_number [source] target

DESCRIPTION

     The nos-tun utility is used to establish an nos style tunnel, (also known as ka9q or IP-IP tunnel) using a tun(4) kernel interface.

     Tunnel is the name of the tunnel device /dev/tun0 for example.

     Source and destination are the addresses used on the tunnel device.  If you configure the tunnel against a cisco router, use a netmask of
     ``255.255.255.252'' on the cisco.	This is because the tunnel is a point-to-point interface in the FreeBSD end, a concept cisco does not
     really implement.

     Protocol number sets tunnel mode.	Original KA9Q NOS uses 94 but many people use 4 on the worldwide backbone of ampr.org.

     Target is the address of the remote tunnel device, this must match the source address set on the remote end.

EXAMPLES

     This end, a FreeBSD box on address 192.168.59.34:

	   nos-tun -t /dev/tun0 -s 192.168.61.1 -d 192.168.61.2 192.168.56.45

     Remote cisco on address 192.168.56.45:

	   interface tunnel 0
	   ip address 192.168.61.2 255.255.255.252
	   tunnel mode nos
	   tunnel destination 192.168.59.34
	   tunnel source 192.168.56.45

AUTHORS

     Nickolay N. Dudorov <nnd@itfs.nsk.su> wrote the program, Poul-Henning Kamp <phk@FreeBSD.org> wrote the man-page.  Isao SEKI
     <iseki@gongon.com> added a new flag, IP protocol number.

BUGS

     We do not allow for setting our source address for multihomed machines.

BSD
								  April 11, 1998							       BSD

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