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How do I create an array from a file using every 3rd line

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Top Forums Shell Programming and Scripting How do I create an array from a file using every 3rd line
# 8  
Old 08-03-2009
Code:
my %hash;
local $/="RUNNING";
while(<DATA>){
	if(/ceName: ([^ \n]*).*processName: ([^ \n]*).*Status: ([^ \n]*)/ms){
		$hash{$2}->{$1}=$3;
	}
}
print "processName        Status Node-1                   Status Node-2\n";
print "-----------        -------------------              -------------------\n";
foreach my $key (keys %hash){
	print $key,"  ";
	foreach my $k(keys %{$hash{$key}}){
		print $hash{$key}->{$k},"   ";
	}
	print "\n";
}
__DATA__
ceName: Node-1
processName: tzMgmt
Status: PROCESS_NOT_RUNNING
ceName: Node-2
processName: tzMgmt
Status: PROCESS_RUNNING
ceName: Node-1
processName: XDM
Status: PROCESS_NOT_RUNNING
ceName: Node-2
processName: XDM
Status: PROCESS_RUNNING

# 9  
Old 08-03-2009
Quote:
Originally Posted by edidataguy
Try this and see if you can modify it to your requirement:
Code:
sed 'N;N;N;N;N;s/\n/\t\t/gp' file

FYI: You put your data / input / output etc also between [code]
This will make it easy to read.

---------- Post updated at 11:33 PM ---------- Previous update was at 05:27 PM ----------

This works, but not the best way.
Lets see if any one else comes up with a better one.
Code:
sed  '/ceName:.*/d; s/^[^:]*: //' 3rdline.txt | sed 'N;N;N;s/\n/\t/g; s/\(^[^\t]*\t[^\t]*\t\)[^\t]*\t\([^\t]*\)$/\1\2/'

Thanks for your efforts, edidataguy. However, the result is the following:

Code:
sed  '/ceName:.*/d; s/^[^:]*: //' 3rdline.txt | sed 'N;N;N;s/\n/\t/g; s/\(^[^\t]*\t[^\t]*\t\)[^\t]*\t\([^\t]*\)$/\1\2/'
tzMgmttPROCESS_NOT_RUNNINGttzMgmttPROCESS_RUNNING
XDMtPROCESS_NOT_RUNNINGtXDMtPROCESS_RUNNING

Regards,

Bjoern

---------- Post updated at 01:32 PM ---------- Previous update was at 01:29 PM ----------
Quote:
Originally Posted by RadRod
Hi I just did a simalar thing and ended up using awk you might find this a lot simpler Eg:

Code:
awk 'ORS=NR%3?"~":"\n"' alltr.out > alltr.sql

Thanks for the reply, RadRod. However, this command resulted in a syntax error:

Code:
# awk 'ORS=NR%3?"~":"\n"' alltr.out
awk: syntax error near line 1
awk: bailing out near line 1

Regards,

Bjoern

---------- Post updated at 01:56 PM ---------- Previous update was at 01:32 PM ----------
Quote:
Originally Posted by summer_cherry
Code:
my %hash;
local $/="RUNNING";
while(<DATA>){
    if(/ceName: ([^ \n]*).*processName: ([^ \n]*).*Status: ([^ \n]*)/ms){
        $hash{$2}->{$1}=$3;
    }
}
print "processName        Status Node-1                   Status Node-2\n";
print "-----------        -------------------              -------------------\n";
foreach my $key (keys %hash){
    print $key,"  ";
    foreach my $k(keys %{$hash{$key}}){
        print $hash{$key}->{$k},"   ";
    }
    print "\n";
}

------- SNIP--------

Hi summer_cherry.

Thanks for your help. Which shell was this run on? My system is running on Solaris 10. I called the script with your code 'procheck'; here are my results:

Code:
# ./procheck
./procheck[3]: my:  not found
./procheck[3]: $/=RUNNING: is not an identifier


Regards,

Bjoern
# 10  
Old 08-04-2009
Quote:
# awk 'ORS=NR%3?"~":"\n"' alltr.out
awk: syntax error near line 1
awk: bailing out near line 1
Try to use gawk or nawk instead of awk.
# 11  
Old 08-04-2009
Quote:
Originally Posted by edidataguy
This is a little more refined:
Code:
sed  '/ceName:.*/d; s/^[^:]*: //' 3rdline.txt | sed 'N;N;N;s/\n/\t/g; s/\([^\t]*\t\)//3'

Code:
 
Thanks for your efforts, edidataguy. However, the result is the following:
tzMgmttPROCESS_NOT_RUNNINGttzMgmttPROCESS_RUNNINGXDMtPROCESS_NOT_RUNNINGtXDMtPROCESS_RUNNING


Sorry, could not come back to you early. Got tied up.
OK. Looks like there is as issue with your version of sed recognizing the "\t" (tab) and \n (new line). Try it this way, replace all \t with \\t and \n with \\n. See if it works.
# 12  
Old 08-04-2009
Quote:
Originally Posted by BRH
...
Hi summer_cherry.

Thanks for your help. Which shell was this run on? My system is running on Solaris 10. I called the script with your code 'procheck'; here are my results:

Code:
# ./procheck
./procheck[3]: my:  not found
./procheck[3]: $/=RUNNING: is not an identifier

...
Hi,

If I may chip in here, summer_cherry's script is written in Perl. So you will have to feed your "procheck" file to the perl interpreter.

First check if perl exists in your system. On my box:

Code:
$ 
$ which perl
/usr/bin/perl
$ 
$ perl -v

This is perl, v5.10.0 built for i486-linux-gnu-thread-multi

Copyright 1987-2007, Larry Wall

Perl may be copied only under the terms of either the Artistic License or the
GNU General Public License, which may be found in the Perl 5 source kit.

Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl".  If you have access to the
Internet, point your browser at http://www.perl.org/, the Perl Home Page.

$

And then run the "procheck" file thusly:

Code:
$ 
$ cat procheck
my %hash;
local $/="RUNNING";
while(<DATA>){
    if(/ceName: ([^ \n]*).*processName: ([^ \n]*).*Status: ([^ \n]*)/ms){
        $hash{$2}->{$1}=$3;
    }
}
print "processName        Status Node-1                   Status Node-2\n";
print "-----------        -------------------              -------------------\n";
foreach my $key (keys %hash){
    print $key,"  ";
    foreach my $k(keys %{$hash{$key}}){
        print $hash{$key}->{$k},"   ";
    }
    print "\n";
}
__DATA__
ceName: Node-1
processName: tzMgmt
Status: PROCESS_NOT_RUNNING
ceName: Node-2
processName: tzMgmt
Status: PROCESS_RUNNING
ceName: Node-1
processName: XDM
Status: PROCESS_NOT_RUNNING
ceName: Node-2
processName: XDM
Status: PROCESS_RUNNING
$ 
$ perl procheck
processName        Status Node-1                   Status Node-2
-----------        -------------------              -------------------
tzMgmt  PROCESS_NOT_RUNNING   PROCESS_RUNNING   
XDM  PROCESS_NOT_RUNNING   PROCESS_RUNNING   
$ 
$

Alternatively, if you add the perl "shebang" at the top of your file and if you have made it executable, then you will be able to run it successfully the way you invoked it.

Code:
$ 
$ head -3 procheck
#!/usr/bin/perl
my %hash;
local $/="RUNNING";
$ 
$ chmod 744 procheck
$ 
$ ./procheck
processName        Status Node-1                   Status Node-2
-----------        -------------------              -------------------
tzMgmt  PROCESS_NOT_RUNNING   PROCESS_RUNNING   
XDM  PROCESS_NOT_RUNNING   PROCESS_RUNNING   
$ 
$

HTH,
tyler_durden
# 13  
Old 08-05-2009
Quote:
Originally Posted by edidataguy
Code:
 
Thanks for your efforts, edidataguy. However, the result is the following:
tzMgmttPROCESS_NOT_RUNNINGttzMgmttPROCESS_RUNNINGXDMtPROCESS_NOT_RUNNINGtXDMtPROCESS_RUNNING


Sorry, could not come back to you early. Got tied up.
OK. Looks like there is as issue with your version of sed recognizing the "\t" (tab) and \n (new line). Try it this way, replace all \t with \\t and \n with \\n. See if it works.

Hi editaguy. I don't think the problem's with sed:

Code:
 
# sed  '/ceName:.*/d; s/^[^:]*: //' 3rdline.txt | sed 'N;N;N;s/\n/\\t/g; s/\([^\\t]*\\t\)//3'
tzMgmt\tPROCESS_NOT_RUNNING\ttzMgmtPROCESS_RUNNING
XDM\tPROCESS_NOT_RUNNING\tPROCESS_RUNNING

There are additional '\t's now. I think I may have to resort to arrays.


Bjoern
# 14  
Old 08-05-2009
Thanks tyler, it works now!

Code:
# ./procheck
processName        Status Node-1                   Status Node-2
-----------        -------------------              -------------------
tzMgmt  PROCESS_NOT_RUNNING   PROCESS_RUNNING
XDM  PROCESS_NOT_RUNNING   PROCESS_RUNNING

One question: I'm not familiar with perl, if the _DATA_ is an external file, how do I reference it in the script?

Thanks again,

Bjoern
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