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sub uniq {
my %h;
return grep { !$h{$_}++ } @_
}

The above code is to remove duplicates from array.

I am having hard time understanding below things (basically around highlighted...

@sorted = sort { $a <=> $b } @unsorted;
I am having hard time understanding how this works? I know the output but interested to know the working.


Thanks in advance.

@Scrutinizer (https://www.unix.com/member_modal.php?u=302052697&modal=1) that explains the code well. Thank you very much :)



and I think we also need a \n for expected output :)

awk...

Question: Write a command to print the fields in a text file in reverse order?
awk 'BEGIN {ORS=""} { for(i=NF;i>0;i--) print $i," "; print "\n"}' filename
I was thinking it should be (what is the...

just learnt below so updating here -

super().__init__(value) -- when using super(), no need to pass self

Test.__init__(self,value) -- when using BaseClassName, one needs to pass self too

I am using python 3.4. Below is the exception I am getting-

Traceback (most recent call last):
File "./oop.py", line 20, in <module>
y = DerivedClass("Manu")
File "./oop.py", line 15,...

Hi Corona688,

grep -F -f file1 file2 > file3

The above code (added -F) worked really fast for me. I could complete search for a file with 1.5 million records in 5-6 seconds.

Really...

Thank you for your reply @Corona688. But I see the grep command mentioned by you is also running very slow. I am working with files having millions of records.

Let me know if any other way to...

Hi All,

This query is regarding performance improvement of a command.

I have a list of IDs in a file (say file1 with single ID column) and file2 has the data rows.

I need to get the IDs...

Command 1:
$script | grep 'Write to ECC( SSID=MARGIN)'
Command 2:
$script | grep 'is not greater than existing logical processing'

The above commands run my script and search the mentioned...

great Thanks. I'll read more about awk built-in functions.

Thanks Ravindra.

I had egrep in my code (but strange that line was commented).
I did remove it and added escape character (\$0) and it worked.

my @pendJobs =...

Agree. Apologies for not providing proper requirement. Updated my original question.

This latest solution provided by you is not working as well. Error is "grep: write error: Broken pipe"

my...

I am using below and it is giving me error- egrep: write error: Broken pipe


my @pendJobs = `showStreamsGLIS$reg.$env.ksh | egrep ' OH | OI | RU ' | awk '{sub(/^ +/,X,$0);print}'`;


P.S: I...

Script showStreamsGLIS$reg.$env.ksh gives me output as below-


Job Stime Etime Status ExitCode
GLIS-AS-S-EFL-LOCK-B ----- ----- OI 103313880/0
...

Thanks Ravinder. I thought single quotes (' ') had some issue in my command but it was \ (as you mentioned).

In perl script it works with \ (like \$1) only but in shell script no need of \ (simple...

Example:

`abc.ksh | grep '^GLIS'| awk -F' ' '{print \$1}'`;

Thanks R.Singh. I'll make sure I'm using code/tags for my next posts.
The solution provided by you worked and I have learned something (NF). Cheers :)

---------- Post updated at 04:48 AM...

I want to retrieve Status from below example. Columns numbers will be dynamic but Status will always be 2nd last-

JobName StartTime EndTime Status ExitCode

autorep -j $jobName | grep '^FR' |...

Thanks .. Let me try :)

---------- Post updated at 07:18 AM ---------- Previous update was at 06:52 AM ----------

Thanks R.Singh for quick response..your solution worked perfectly (y)

e.g.

File name: File.txt
cat File.txt
Result:

#INBOUND_QUEUE=FAQ1
INBOUND_QUEUE=FAQ2

I want to get the value for one which is not commented out.

Thanks,