records operation logs on linux

A logrec records operation logs even if you login another servers with telnet, ssh and etc. Outputs are not recorded. Just do only commands a user hits.

1. build on linux
   $ gcc -lutil logrec.c -o logrec

2. execute
   Argument is a file to record logs.
   $ ./logrec /var/logrec/some_user

3. check processes
   $ ps auxwf | grep logrec
   root 10925 (snip) _ ./logrec /var/logrec/some_user
   root 10926 (snip) _ ./logrec /var/logrec/some_user

1. Do some operations.

2. Check a file.
   $ cat /var/logrec/some_user
   yyyy-mm-dd 00:00:00 logrec started
   yyyy-mm-dd 00:00:05 $ ls
   yyyy-mm-dd 00:00:10 $ ssh example.com
   yyyy-mm-dd 00:00:15 $ ls

3. when quitting the tool
   Ctrl + D

-notice-
Logs are buffed.
You might not see a record in the logfile after you hits one commands.
It depends on OS you use.
For checking normality of the tool, hit some commands.

See https://alpha-netzilla.blogspot.com/2015/05/logrec.html