spxwnmc

GREP Options

--max-count=number of matches before stopping search
--exclude=*.txt  with -r option

Note: Lookahead and lookbehind are Perl-style regular expression elements, so you'd have to use Perl directly, or GNU grep with the -P option, which then interprets Perl regex.

grep -o pattern file.txt **shows only the matched string** 
grep -bn pattern file.txt **shows row and col**  
grep -v pattern file.txt **inversion**  

spxwnmc

Google dork cheatsheet

Search filters

Filter	Description	Example
allintext	Searches for occurrences of all the keywords given.	allintext:"keyword"
intext	Searches for the occurrences of keywords all at once or one at a time.	intext:"keyword"
inurl	Searches for a URL matching one of the keywords.	inurl:"keyword"
allinurl	Searches for a URL matching all the keywords in the query.	allinurl:"keyword"
intitle	Searches for occurrences of keywords in title all or one.	intitle:"keyword"

spxwnmc

==========================================================================================================
problem: move/copy VM manually and run
Cannot register the DVD image
C:\Program Files\Oracle\VirtualBox\VBoxGuestAdditions.iso' with UUID {fc087cbc-df04-47b4-b42f-25f614463f78} already exists. 
fix: edit  ".VBOX" file and remove entries between tags
<DVDImages>
</DVDImages>
==========================================================================================================
problem:
The virtual machine is being powered down, stuck

spxwnmc

#!/bin/bash

set -o errexit
set -o nounset
set -o pipefail

target="${1:-/opt/sublime_merge/sublime_merge}"

check_sha() {
	local sha_valid