Operating Systems - Project 1

Web log analyzer

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Shell script for analysis of logs from webserver.
POSIX-ly correct.
Tested on Linux and FreeBSD.

Author: Peter Koprda [email protected]

Usage

$ ./wana [FILTER] [COMMAND] [LOG [LOG2 [...]]

Filters:

-a DATETIME         show queries after this date; 
                    DATETIME must be in format YYYY-MM-DD HH:MM:SS
-b DATETIME         show queries before this date;
                    DATETIME must be in format YYYY-MM-DD HH:MM:SS
-ip IPADDR          show queries from this source address IPADDR;
                    IPADDR must be IPv4 or IPv6
-uri URI            show queries of requests on the webpage URI;
                    URI is standard regular expression

Commands:

list-ip             list of source IP adresses
list-hosts          list of source domain names
list-uri            list of destination sources (URI)
hist-ip             create histogram of source IPs
hist-load           create histogram of load

Example:

$ ./wana.sh -a 2019-02-21 00:00:00 -b 2019-02-22 00:00:00 hist-ip log1 log2

$ ./wana.sh -uri "/robots\.txt" list-ip log1 log2 log3

When no log file is provided, script reads logs from standard input:

$ ./wana.sh list-ip

Script also accept log files compressed with tool gzip:

$ ./wana.sh list-ip log.gz