grep -v "BBB" /path/to/file > /newfile

mv newfile file

awk ' { $1="" ; print }'

awk '$1 !~ /BBB/ {print $3}' <filename>

grep -v BBB /path/to/file

sed -i '/BBB/d' file

#!/bin/bash
grep -v "GuildChat" $1 | grep -v "You tell " | grep -v "tells you:" | grep -v "tells group:" | grep -v [[] | grep -v "picked up a" | grep -v ">Player" | awk '{$1="" ;  print}' > $1_cleaned

grep -v "$2"

#!/usr/bin/env python

import sys
import optparse
import os

def main(argv):
    ## set path initially according to where the script's called
    index = argv[0].rfind('/')
    path = argv[0][:index]
    script_name = argv[0][index + 1:]

    ## deal with commandline options
    p = optparse.OptionParser('%s [options]\na CT UltraCrapWare (tm) product, no (c) 2008' % script_name)
    p.add_option('--filename', '-f', default = 'textfile', action = 'store', help = 'input filename')
    p.add_option('--path', '-p', action = 'store', help = 'path to files')
    p.add_option('--key', '-k', action = 'append', help = 'add extra keys to filter, 1 by 1')
    p.add_option('--test', '-t', action = 'store_true', default = 'False', help = 'reset input filename back to original name before processing')
    options, arguments = p.parse_args()

    filename = options.filename

    if options.path is not None and len(options.path) > 0:
        path = options.path

    ## strings to search for
    cut_keys = ["GuildChat", "You tell "
                , "tells you:", "tells group:"
                , "[", "picked up a"
                , ">Player"]
    if options.key is not None and len(options.key) > 0:
        cut_keys += options.key

    ## reset file, for testing only
    if options.test:
        if os.path.exists(os.path.join(path, filename + '.original')):
            os.rename(os.path.join(path, filename + '.original'), os.path.join(path, filename))

    in_file = open(os.path.join(path, filename), 'r')                    ## file to read
    out_file = open(os.path.join(path, filename + '.processed'), 'w')    ## file to write

    ## loop through the lines in the file
    keep_going = True
    while keep_going:
        in_string = in_file.readline()
        if len(in_string) > 0:          ## input, continue processing
            key_found = False
            for key in cut_keys:                ## search for key strings
                if in_string.find(key) != -1:
                    key_found = True
            if not key_found:
                #in_string = in_string[11:]     ## chop off time code first 11 characters, I prefer:
                index = in_string.find(' ')     ## chop off time code: everything before first space
                if index != -1:
                    in_string = in_string[index + 1:]
                out_file.write(in_string)       ## write line, return to process next line
        else:                           ## no further input, stop processing
            keep_going = False

    ## finished
    in_file.close()
    out_file.close()

    os.rename(os.path.join(path, filename), os.path.join(path, filename + '.original'))
    os.rename(os.path.join(path, filename + '.processed'), os.path.join(path, filename))



if __name__ == '__main__':
    main(sys.argv)

s = "sidux"
s[0]         # 's'
s[2:]        # 'dux'
s[:4]        # 'sidu'
s[-2]        # 'u'
s[-2:]       # 'ux'
len(s)       # 5
s += s       # 'siduxsidux'
len(s)       # 10
s[2:7]       # 'duxsi'
s.find('d')  # 2
s.rfind('d') # 7