KSH: syncing three files the hard way

ReefShark · 07-31-2005, 07:23 AM

I am working on a script (ksh) and I could use a few pointers in the right direction.

The point where am currently stuck is this:
I have 3 copies of the same file on three machines (1 linux, 2 windows) which I can read through samba mounts. I need to check which file has most recently changed since the last run of the script.

I also want to find a way (preferrably as a normal user) if eth2 is up, or another way to see if I am on my home network (I run the script on my office laptop, so I don't want the script to run from crontab if I am at work).

There are a few bumps further down the road, but hopefully I can find a solution myself for those. Hope someone can give me a pointer in the right direction.

Thanks in advance.

druuna · 07-31-2005, 10:56 AM

Hi,

Problem one:

Code:

#!/bin/ksh

# change these to your liking
FILE01="/path/to/file"
FILE02="/other/path/to/file"
FILE03="/another/path/to/file"

FILE01_TS="`ls -l --time-style=+%Y%m%d%H%M ${FILE01} | cut -d" " -f7`"
FILE02_TS="`ls -l --time-style=+%Y%m%d%H%M ${FILE02} | cut -d" " -f7`"
FILE03_TS="`ls -l --time-style=+%Y%m%d%H%M ${FILE03} | cut -d" " -f7`"

NEWEST_FILE="${FILE01}"
NEWEST_TS="${FILE01_TS}"

if (( FILE01_TS < FILE02_TS ))
then
  NEWEST_TS="${FILE02_TS}"
  NEWEST_FILE="${FILE02}"
fi

if (( NEWEST_TS < FILE03_TS ))
then
  NEWEST_TS="${FILE03_TS}"
  NEWEST_FILE="${FILE03}"
fi

echo ${NEWEST_FILE}

Maybe not to elegant, but it works.

Problem 2:

Can't you use ping (ping -c 1 <machine>) to check this?

Hope this gets you going again.