python - Rewrite config file based on standard error output -

python - Rewrite config file based on standard error output -

i'm new linux , have fedora 20 build class. installed tripwire using default, out of box configs , want take standard errors install prepare config file.

to collect errors:

tripwire -m -c tw.cfg 2> errors

to clean error file processing:

cat errors.txt | grep "/" | cutting -d " " -f 3 > fixederrors

this gives me nice clean file 1 path per line i.e.:

/bin/ash /bin/ash.static /root/.xresources

i automate process comparing info in fixederrors config file , prepend matching strings '#'.

i tried sed, commented out whole config file!

sed 's/^/#/g' fixederrors > commentederrors

alternatively, thought comparing config file , fixederrors , creating 3rd file. there way take 2 files, compare them, , remove duplicated data?

any help appreciated. tried bash , python, don't know plenty , went downwards rabbit hole on one. again, growth , not in production environment.

let's suppose have input file named fixederrors "clean"

/bin/ash /bin/ash.static /root/.xresources

this input configuration file named config.original

use /bin/ash utilize /bin/bash stuff /bin/ash.static , friends /root/.xresources other stuff...

with script in bash

#!/bin/bash input_conf_file="config.original" # original configuration file output_conf_file="config.new" # new configuration file input_error_file="fixederrors" # file of cleaned error rm -f $output_conf_file # let's create new file erasing old while read -r line ; # meanwhile there line in config file addingchar="" # no char add together # while ifs= read -r line2 ; # each line of error file, # here can add together specific rules match e.g # line2=${line2}" " # if has space after... [[ $line == *$line2* ]] && addingchar="#" # if found --> alter prefix "#" done < $input_error_file echo "${addingchar}${line}" >> $output_conf_file # print in new file done < $input_conf_file cat $output_conf_file # can avoid it's check results exit 0

you have output

#use /bin/ash utilize /bin/bash #do stuff /bin/ash.static , friends #/root/.xresources other stuff...

note:

ifs= removes trailing spaces in read use wisely because e.g. match /bin/ash grab lines /bin/ash.everything; if exists line in configuration input file /bin/ash.dynamic commented too. without prior knowledge of configuration file it's not possible set specific rule, can starting here.

python bash sed