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(Create shortcuts in Linux (symbolic links))
 
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== GREP ==
 
== GREP ==
grep [options] "foo" [file(s)]
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grep [OPTIONS] "REGEXP" [FILES(s)]
  
You can omit the quotes if there are no spaces in the search term.
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*"REGEXP" can be any [[Regular Expression]]
If file is omitted, all files in current dir are searched.
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*Single or double quotes can be used.
Multiple files can be specified separated by spaces or wildcarded (*.txt)
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*Quotes can be omitted if there are no spaces in the search term.
'''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.'''
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*If file is omitted, all files in current dir are searched.
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*Multiple files can be specified separated by spaces or wildcarded (*.txt)
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*''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.''
  
-i  ignore case
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OPTIONS:
-n  print line #s
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-i  ignore case
-l  just show filenames
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-r  recursive files inclusion
-x  exact matches only
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-F  Fast search using literal search term, not regEx
-w  match whole words only
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-n  print line #s
-m, --max-count=NUM      stop after NUM matches
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-l  just show filenames
-a  text files only
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-x  exact matches only
-r recursive files inclusion
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-w  match whole words only
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-m, --max-count=NUM      stop after NUM matches
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-a  text files only
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-iFr ignore case, simple string search, search current directory and subdirectories
  
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'''egrep''' is replaced with '''grep -E''')
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'''fgrep''' is replaced with '''grep -F''')
  
foo can be any [[Regular Expression]]
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Can pipe the output of another command
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ls |grep blah lists all files in the current directory whose names contain the string "blah"
  
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==Create shortcuts in Linux (symbolic links)==
  
egrep supports pipes ("or") (= grep -E)
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ln -s /pathToTarget nameOfTheLink
 
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egrep "fruit|bread"
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e.g.  ln -s /var/www/html/public_html/ webDirectory
 
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ln creates hard and soft links. The -s option create soft (symbolic) links to resources in other directories, even other drives.
fgrep (fast grep, simple text, no RegEXp) (- grep -F)
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Can pipe the output of another command
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ls |grep blah lists all files in the current directory whose names contain the string "blah"
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Latest revision as of 13:28, 12 September 2015

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