How to grep or awk or sed exact match in linux

[servernameserver]

How to match exact word and string using grep

Here is my data file foo 3535 ab 3355 bar 55523 gdg 6646 foo1 333 xzzz 555 foobar 555 zztt 56 FOO 333 44 66 7 foo 5555 tttt 7777 I type grep foo input.txt I get foo 3535 ab 3355 foo1 333 xzzz 555 foobar 555 zztt 56 foo 5555 tttt 7777 however, i only want: foo 3535 ab 3355 foo 5555 tttt 7777 Is it possible? How do I tell that to grep? How can I match exact word and string using grep?

I’ve already read this and it didn’t satisfy my test case.

Say I’ve

servername-server

servername

servername_new_bak

Say servername and servername_new_bak aren’t running.

When I do ps -aux| grep servername | wc -l I want only 1 as output as servername is not running, but currently I’m getting 3 as output because servername-server is running.

That’s my use case.

How do I achieve this?

[nixcraft]

See the following page:
https://www.cyberciti.biz/tips/grepping-ps-output-without-getting-grep.html

[cedric.a]

1way
cat input.txt |awk ‘{print $1,$2,$3,$4,$(NF-3),$(NF-2),$(NF-1),$NF}’

[nnniiiixxxx]

grep “^string$”
it will search for exact word/string
^ - start with
$ - end with