topic How can i get specifically some lines between a sign ? in Operating System - Linux

How can i get specifically some lines between a sign ?

Manuales — Sun, 24 Apr 2011 20:11:01 GMT

Hi all,
i have this output file:

scheduled Jobs:
Level type Pri
==== (this is a note: first "=")
..xxxx
..xxxx
..xxxx
..xxxx
..xxxx
..xxxx
..xxxx
..xxxx
==== (this is a note: second "=")

Ended Jobs
Level type Pri
===== (this is a note: third "=")
....
...
..
...
....
===== (this is a note: fourth "=")

i want to get only the lines between the first "=" and the second "=", it means, only the scheduled Jobs --> lines: ..xxxx
How can i get them? can i do it with awk? please your support.

Re: How can i get specifically some lines between a sign ?

James R. Ferguson — Sun, 24 Apr 2011 21:09:56 GMT

Hi Manuales:

As you stated your requirement and the pattern of the data:

perl -ne 'if (?^===?...?^===?) {print unless /^===/}' file

Regards!

...JRF...

Re: How can i get specifically some lines between a sign ?

Bob_Vance — Mon, 25 Apr 2011 16:05:45 GMT

Here's an example script using 'awk' :

## cat /tmp/doit

#
awk '
BEGIN {c=0}
{
while (getline) {
if ( match($0 , "===") ) {
c=c+1
if (c>=2) { exit }
continue
}
if (c==0) {
continue
}
if (c==1) {
print $0
continue
}
}
}
END { }
'

Here's a run of it:

## cat /tmp/in | /tmp/doit
..xxxx1
..xxxx2
..xxxx3
..xxxx4
..xxxx5
..xxxx6
..xxxx7
..xxxxE

bv

Re: How can i get specifically some lines between a sign ?

Peter Nikitka — Mon, 25 Apr 2011 16:54:24 GMT

Hi,
in my opinion it is better to keep the awk standard parsing:

awk '/^====/ {mark++}
mark>1 {exit}
mark'

mfg Peter
PS: untested

Re: How can i get specifically some lines between a sign ?

Bob_Vance — Mon, 25 Apr 2011 17:41:03 GMT

@Peter

I've found it easier to use 'awk' in the complex way rather than trying to grok the eccentricities of it's simpler syntax.
Of course, then it just becomes another programming language.

I got used to using it before 'perl' was around.

BTW, your script prints the first "====" line , but I don't know how to fix it :>)

bv

Re: How can i get specifically some lines between a sign ?

Dennis Handly — Mon, 25 Apr 2011 18:33:44 GMT

>BV: I've found it easier to use 'awk' in the complex way rather than trying to grok the eccentricities of it's simpler syntax.

I too started that way but I learn as I go along.

>but I don't know how to fix it :>)

A "next" will cause it to go to the next cycle, think of it as a super "continue":
awk '
/^====/ {
if (++mark > 1) exit
next
}
mark { print $0 }' input-file

Re: How can i get specifically some lines between a sign ?

Peter Nikitka — Tue, 26 Apr 2011 07:23:14 GMT

OK,
other solution without the 'xxxx'-line:

awk 'mark
/^====/ {mark++}
mark>1 {exit}'