Greetings All!!
I have a very peculiar problem where I have to parse a big text file and extract useful data out of it with starting and ending block pattern matching.
e.g. I have a input file like this:
sample data
block1
sample data
start
useful data
end
sample data
block2
sample... (5 Replies)
I have a file containing the following contents
All of us, including Zippy, our dog
All of us, including Zippy and Zippy
All of us, including Zippy and Zippy and Zelda
Testing All of us Zippy
Now, i wanna grep and get the lines which has only one occurance of word Zippy and starting with... (1 Reply)
Hi all,
I need to extract some lines from a file based on a condition. For ex:
My file will contain 50 lines and i need to extract line which has "File" in it and then the line which has "date" in it. Which command will be the most efficient way to do it. I have tried two ways
1.... (1 Reply)
Hi,
I have a sql file and i need to extract the table names used in the sql file using a unix script. If i can extract the lines between the keywords 'FROM' and 'WHERE' in the file, my job is done. can somebody tell me how to do this using a shell script. If u can just let me know, how to... (2 Replies)
i want to extract lines 5 and 7 from a txt file which contains nearly 20 entries how to do it
also i want to check whether the 42nd character is 'S' in that line
suggestions welcome (4 Replies)
hi all,
i searched in unix.com and accquired the following commands for extracting specific lines from a file ..
sed -n '16482,16482p' in.sql > out.sql
awk 'NR>=10&&NR<=20' in.sql > out.sql....
these commands are working fine if i give the line numbers as such .. but if i pass a... (2 Replies)
Hi,
We have a file where we need to extract the lines of a file based on the first three characters of every line in that file.
Eg:
RAM hill station
SAM student
RAM rose
SAM apple
RAM india
SAM australia
RAM happy
RAM heaven
SAM smile
RAM glow
So, all the lines that start... (5 Replies)
Hi,
I have one file, say file 1, that has data like below where 19900107 is the date,
19900107 12 144 129 0.7380047
19900108 12 168 129 0.3149017
19900109 12 192 129 3.2766666E-02
... (3 Replies)
consider i have two files
cat onlyviews1.sql
CREATE VIEW V11
AS
SELECT id,
name,
FROM
etc etc
WHERE etc etc;
CREATE VIEW V22
AS
SELECT id,
name,
FROM
etc etc
WHERE etc etc;
CREATE VIEW V33
AS (10 Replies)
Hi UNIX Members,
I've been tasked with performing the following:
Extract a block of data in column form
#This data changes each time, therefore automating future procedures
Please Note the following:
line = reading a line from a file_list that leads to the data
The filename is called... (16 Replies)
Discussion started by: Klor
16 Replies
LEARN ABOUT DEBIAN
devel::leak
Leak(3pm) User Contributed Perl Documentation Leak(3pm)NAME
Devel::Leak - Utility for looking for perl objects that are not reclaimed.
SYNOPSIS
use Devel::Leak;
... setup code
my $count = Devel::Leak::NoteSV($handle);
... code that may leak
Devel::Leak::CheckSV($handle);
DESCRIPTION
Devel::Leak has two functions "NoteSV" and "CheckSV".
"NoteSV" walks the perl internal table of allocated SVs (scalar values) - (which actually contains arrays and hashes too), and records
their addresses in a table. It returns a count of these "things", and stores a pointer to the table (which is obtained from the heap using
malloc()) in its argument.
"CheckSV" is passed argument which holds a pointer to a table created by "NoteSV". It re-walks the perl-internals and calls sv_dump() for
any "things" which did not exist when "NoteSV" was called. It returns a count of the number of "things" now allocated.
CAVEATS
Note that you need a perl built with -DDEBUGGING for sv_dump() to print anything, but counts are valid in any perl.
If new "things" have been created, "CheckSV" may (also) report additional "things" which are allocated by the sv_dump() code.
HISTORY
This little utility module was part of Tk until the variable renaming in perl5.005 made it clear that Tk had no business knowing this much
about the perl internals.
AUTHOR
Nick Ing-Simmons <nick@ni-s.u-net.com>
perl v5.14.2 2004-03-18 Leak(3pm)