--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**
| 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" |
| ========================================================================================================== | |
| 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 |
| #!/bin/bash | |
| set -o errexit | |
| set -o nounset | |
| set -o pipefail | |
| target="${1:-/opt/sublime_merge/sublime_merge}" | |
| check_sha() { | |
| local sha_valid |