LOGFOO

Filter and format logfiles on command line

build

• LUA required ;)

gcc -I/usr/include/lua5.4 -g logfoo.c -llua5.4 -o logfoo

usage

logfoo <path to lua> <path to logfile>

lua

• the lua needs 2 methods
  • function filter (line) returns boolean; true -> don't print line
  • function format (line) returns string
• example:

function filter (line)
    -- only lines containing text "Unknown kernel..."
    return line:find("Unknown kernel command line parameters") == nil
end

function format (line)
    -- red, bold, underline text "IMAGE"
    line = line:gsub("(IMAGE)", color("%1", "31;1;4"))
    -- green text "gentoo"
    line = line:gsub("(gentoo)", color("%1", "32"))
    -- only text between "
    return line:match("\"([^\"]+)\"")
end