GenWikiLinux
From birchyHistory
(→Create shortcuts in Linux (symbolic links)) |
|||
| Line 3: | Line 3: | ||
== GREP == | == GREP == | ||
| − | grep [ | + | grep [OPTIONS] "REGEXP" [FILES(s)] |
| − | * | + | *"REGEXP" can be any [[Regular Expression]] |
| + | *Single or double quotes can be used. | ||
| + | *Quotes can be omitted if there are no spaces in the search term. | ||
| + | |||
*If file is omitted, all files in current dir are searched. | *If file is omitted, all files in current dir are searched. | ||
*Multiple files can be specified separated by spaces or wildcarded (*.txt) | *Multiple files can be specified separated by spaces or wildcarded (*.txt) | ||
| − | * | + | *''While most tutorials assume that you are going to specify a file to search, using the search feature in vi makes more sense for working with a single file.'' |
| + | OPTIONS: | ||
-i ignore case | -i ignore case | ||
| + | -r recursive files inclusion | ||
| + | -F Fast search using literal search term, not regEx | ||
-n print line #s | -n print line #s | ||
-l just show filenames | -l just show filenames | ||
| Line 17: | Line 23: | ||
-m, --max-count=NUM stop after NUM matches | -m, --max-count=NUM stop after NUM matches | ||
-a text files only | -a text files only | ||
| − | + | ||
| + | -iFr ignore case, simple string search, search current directory and subdirectories | ||
| + | '''egrep''' is replaced with '''grep -E''') | ||
| + | '''fgrep''' is replaced with '''grep -F''') | ||
| − | + | Can pipe the output of another command | |
| + | ls |grep blah lists all files in the current directory whose names contain the string "blah" | ||
| + | ==Create shortcuts in Linux (symbolic links)== | ||
| − | + | ln -s /pathToTarget nameOfTheLink | |
| − | + | ||
| − | + | e.g. ln -s /var/www/html/public_html/ webDirectory | |
| − | + | ln creates hard and soft links. The -s option create soft (symbolic) links to resources in other directories, even other drives. | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
