I have a text file that contains 4 million lines, each line contains 2 fields(colon as field separator).
....
Here I have to split the second field(can be up to 40,000 fields) by comma into an array for analysis,
.....
How to solve this problem? or you have other alternatives to replacing the split function?
Calling the external command will be to slow (4,000,000 x 40,000 = 160,000,000,000 calls).
Please answer Franklin52 previous question.
Hi all!
I am relatively new to UNIX staff, and I have come across a problem:
I have a big directory, which contains 100 smaller ones. Each of the 100 contains a file ending in .txt , so there are 100 files ending in .txt
I want to split each of the 100 files in smaller ones, which will contain... (4 Replies)
$mystring = "name:blk:house::";
print "$mystring\n";
@s_format = split(/:/, $mystring);
for ($i=0; $i <= $#s_format; $i++) {
print "index is $i,field is $s_format";
print "\n";
}
$size = $#s_format + 1;
print "total size of array is $size\n";
i am expecting my size to be 5, why is it... (5 Replies)
I have gone through all the threads in the forum and tested out different things. I am trying to split a 3GB file into multiple files. Some files are even larger than this.
For example:
split -l 3000000 filename.txt
This is very slow and it splits the file with 3 million records in each... (10 Replies)
Hi,
I have some output in the form of:
#output:
abc123
def567
hij890
ghi324
the above is in one column, stored in the variable x ( and if you wana know about x... x=sprintf(tolower(substr(someArray,1,1)substr(userArray,3,1)substr(userArray,2,1)))
when i simply print x (print x) I get... (7 Replies)
Hi... I have a question regarding the split function in PERL.
I have a very huge csv file (more than 80 million records). I need to extract a particular position(eg : 50th position) of each line from the csv file. I tried using split function. But I realized split takes a very long time.
Also... (1 Reply)
Hi... I have a question regarding the split function in PERL.
I have a very huge csv file (more than 80 million records). I need to extract a particular position(eg : 50th position) of each line from the csv file. I tried using split function. But I realized split takes a very long time.
Also... (0 Replies)
Hi... I have a question regarding the split function in PERL.
I have a very huge csv file (more than 80 million records). I need to extract a particular position(eg : 50th position) of each line from the csv file. I tried using split function. But I realized split takes a very long time.
Also... (1 Reply)
my @d =split('\|', $_);
west|ACH|3|Y|LuV|N||N||
Qt|UWST|57|Y|LSV|Y|Bng|N|KT|
It Returns d as 8 for First Line, and 9 as for Second Line . I want to Process Both the Files, How to Handle It. (3 Replies)
Hello;
I have a file consists of 4 columns separated by tab. The problem is the third fields. Some of the them are very long but can be split by the vertical bar "|". Also some of them do not contain the string "UniProt", but I could ignore it at this moment, and sort the file afterwards. Here is... (5 Replies)
Discussion started by: yifangt
5 Replies
LEARN ABOUT DEBIAN
igawk
IGAWK(1) Utility Commands IGAWK(1)NAME
igawk - gawk with include files
SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ...
igawk [ all gawk options ] [ -- ] program-text file ...
DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).
AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like
@include getopt.awk
in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.
OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports.
EXAMPLES
cat << EOF > test.awk
@include getopt.awk
BEGIN {
while (getopt(ARGC, ARGV, "am:q") != -1)
...
}
EOF
igawk -f test.awk
SEE ALSO gawk(1)
Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.
AUTHOR
Arnold Robbins (arnold@skeeve.com).
Free Software Foundation Nov 3 1999 IGAWK(1)