Solaris: Uso del comando GREP

Uso del comando GREP

domenica 31 gennaio 2010

Option	Definition
-i	Searches for both uppercase ande lowercase characters
-l	lists the names of files with marching lines
-n	Precedes each line with the relative line number in the file
-v	Inverts the search to display lines that do not match th pattern
-c	Counts the lines that contain the pattern
-w	Searches for tehe expression as a complete word,ignoring those matches that are substrings of larger

Esempi:

1) cerca la stringa root nel file /etc/group e mi restituisce il numero della linea

$ grep -n root /etc/group

1:root::0:

2:other::1:root

3:bin::2:root,daemon

4:sys::3:root,bin,adm

5:adm::4:root,daemon

6:uucp::5:root

7:mail::6:root

8:tty::7:root,adm

9:lp::8:root,adm

10:nuucp::9:root

12:daemon::12:root

$cd /etc

$ grep -l root group passwd hosts

group

passwd

$ grep -c root group

Examples of using regular expression metacharacters

$ grep '^no' /etc/passwd

nobody:x:60001:60001:NFS Anonymous Access User:/:

noaccess:x:60002:60002:No Access User:/:

nobody4:x:65534:65534:SunOS 4.x NFS Anonymous Access User:/:

$ grep 'A...n' /etc/passwd

adm:x:4:4:Admin:/var/adm:

lp:x:71:8:Line Printer Admin:/usr/spool/lp:

uucp:x:5:5:uucp Admin:/usr/lib/uucp:

nuucp:x:9:9:uucp Admin:/var/spool/uucppublic:/usr/lib/uucp/uucico

listen:x:37:4:Network Admin:/usr/net/nls:

$ grep 'adm$' /etc/group

sys::3:root,bin,adm

tty::7:root,adm

lp::8:root,adm

postato da Eduardo Kislanski @ 09:17

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