topic Re: grep command in Operating System - HP-UX

grep command

Ridzuan Zakaria — Thu, 27 Jan 2005 16:33:16 GMT

Hi,

I am trying to grep a word "connect" in files but grep command will return the entire line that contain the word "connect" in.

For example:
file text.txt has the following line:

"Uncomment the next line for more connect information */"

Command:
$ grep connect text.txt

Will return the entire line.

I would like to get just "more connect information" not the entire line or subset of the line but still contain the word "connect".

Is there a way to do this in shell script?

Thanks.

Re: grep command

Todd McDaniel_1 — Thu, 27 Jan 2005 17:05:25 GMT

Grep does return the whole line when a pattern match is made. Im not sure I understand the application of your question.

Are you trying to change the word or import it to another file or script?

Maybe you can offer a bit more explanation...

Re: grep command

Ridzuan Zakaria — Thu, 27 Jan 2005 17:14:11 GMT

Hi Todd,

What I am trying to do is that instead of display the entire line from the grep output result, I would like to display subset of the return line.

If "grep connect text.file" will return output:
"your connection to database abc failed"

I would like to display just the "connection to database".

Thanks.

Re: grep command

c_51 — Thu, 27 Jan 2005 17:24:32 GMT

one way is to use awk

awk '
/^connect/ {
if ( NF == 1 ) print $i;
else print $i, $(i+1);
next;
}
/connect$/ {
print $(i-1), $i;
next;
}

/connect/ {
for ( i=1;i<=NF;i++) {
if ( $i ~ "connect" ) {break;}
}
print $(i-1), $i, $(i+1);
}' yourfile

this will print the word before and after "connect".

and i'm sure using perl's patteren matching capabilities would work much better.

Re: grep command

c_51 — Thu, 27 Jan 2005 17:27:52 GMT

oops made some cut and paste errors

awk '
/^connect/ {
if ( NF == 1 ) print $1;
else print $1, $2;
next;
}
/connect$/ {
print $(NF-1), $NF;
next;
}

/connect/ {
for ( i=2;iif ( $i ~ "connect" ) {break;}
}
print $(i-1), $i, $(i+1);
}' yourfile

Re: grep command

Victor Fridyev — Thu, 27 Jan 2005 17:28:30 GMT

Hi,

I'm not sure, that you can do what you want with grep only. If you know sructure of strings in the file, you can do either:

grep connect text.txt | awk '{print $3,$4,$5}' or
grep connect text.txt |cut -c10-25

HTH

Re: grep command

Rodney Hills — Thu, 27 Jan 2005 18:08:40 GMT

One line perl-

perl -n -e 'print "$1 $2 $3\n" if /(\*S+)\s+(connect)\s+(\S*)/i' text.txt

HTH

-- Rod Hills

Re: grep command

Gerhard Roets — Fri, 28 Jan 2005 02:44:29 GMT

Hi

I am ussuming you just want matches for the word connect and not words that is like reconnect or connection.

grep " connect " file.txt

That should do the trick

Hope this is what you want

Gerhard

Re: grep command

Ridzuan Zakaria — Fri, 28 Jan 2005 18:02:56 GMT

I found the solution. Thanks for the sugestions.