I am trying to merge two large file horizontally using paste command. Every thing is working fine except for time. Its taking lot of time.
Is there any effiecient way of doing the same thing or is there anyway by which I can improve its perfomance programatically?
Thanks,
Yeheya (1 Reply)
Hi all,
I have two files -- one with 1024 lines and another with 2048 lines. I want to merge them to create another file in such way that it takes 2 lines from file with 1024 lines and 4 from 2048 lines.
I wrote a sample script and curious to see if there is a better way; i am sure there is,... (4 Replies)
Hi,
I have an input file like
F : 0.1 : 0.002
P : 0.3 : 0.004
P : 0.5 : 0.008
P : 0.1 : 0.005
L : 0.05 : 0.02
P: 0.1 : 0.006
P : 0.01 : 0.08
F : 0.02 : 0.08
Expected output: (2 Replies)
Hi
I have a table which has 2 columns - id and amount.
If there duplicate rows , as in id and amount are same , then i have to update the table in such away that only one row should contain amount and all rows should become zero for that id.
eg
id amount
1 100
1 100
2 200
1... (5 Replies)
Hi!
Thank you ina advance for your Help. Sorry my english, Im from Argentina!
Great Place!!!
So, here si my problem
I have a variable, lets say PARAMETERS that could be set like this:
PARAMETROS="-Usistemas string1 -Astring2 -G -Y -Kcoco -Y string4 -Z"
or
PARAMETROS="string1... (1 Reply)
<Update>
I have the solution:
sed 's/\{3\}/&;&;---;4/'
The thread can be marked as solved!
</Update>
Hi There,
I'm working on a script processing some data from a website into cvs format. There is only one final problem left I can't find a solution.
I've processed my file... (0 Replies)
Hi, I've got a file that I'd like to uniquely sort based on column 2 (values in column 2 begin with "comp").
I tried sort -t -nuk2,3 file.txtBut got:
sort: multi-character tab `-nuk2,3'
"man sort" did not help me out
Any pointers?
Input:
Output: (5 Replies)
1.04/1.05:ELA=20000,POLLK=35000,RH=5000,MH=7000,WH=4359
1.7:ELA=2000,POLLK=2000,RH=2000,MH=2000,WH=607
1.9:ELA=2000,POLLK=2000,RH=2000,MH=2000,WH=396
2.0:POLLK=6000,WENS=10000,ELA=7789
I have this above content where in i wan the total of the every row
i.e.
... (9 Replies)
Hi,
I need help!
I have two files, one containing a list of codes and the other a list of codes and their meaning. I need to extract from file 2 all the codes from file 1 into a new file.
These are my files:
File1:
Metbo
Metbo
Memar
Mth
Metbo
File2:
Metbo Methanoculleus... (3 Replies)
Hi,
I have a quick question on parsing the hour/minute and value from a text file and remove the seconds portion. For example in the below text file:
20:26:01 95.83
20:27:01 96.06
20:28:01 95.99
20:29:01 7.11
20:30:01 5.16
20:31:01 8.27
20:32:02 9.79
20:33:01 11.27
20:34:01 7.83... (2 Replies)
Discussion started by: satishrao
2 Replies
LEARN ABOUT LINUX
erl_comment_scan
erl_comment_scan(3erl) Erlang Module Definition erl_comment_scan(3erl)NAME
erl_comment_scan - Functions for reading comment lines from Erlang source code.
DESCRIPTION
Functions for reading comment lines from Erlang source code.
DATA TYPES
comment() = {integer(), integer(), integer(), [string()]} :
EXPORTS
file(FileName::filename() (see module file)) -> [Comment]
Types Comment = {Line, Column, Indentation, Text}
Line = integer()
Column = integer()
Indentation = integer()
Text = [string()]
Extracts comments from an Erlang source code file. Returns a list of entries representing multi-line comments, listed in order of
increasing line-numbers. For each entry, Text is a list of strings representing the consecutive comment lines in top-down order; the
strings contain all characters following (but not including) the first comment-introducing % character on the line, up to (but not
including) the line-terminating newline.
Furthermore, Line is the line number and Column the left column of the comment (i.e., the column of the comment-introducing % char-
acter). Indent is the indentation (or padding), measured in character positions between the last non-whitespace character before the
comment (or the left margin), and the left column of the comment. Line and Column are always positive integers, and Indentation is a
nonnegative integer.
Evaluation exits with reason {read, Reason} if a read error occurred, where Reason is an atom corresponding to a Posix error code;
see the module file(3erl) for details.
join_lines(Lines::[CommentLine]) -> [Comment]
Types CommentLine = {Line, Column, Indent, string()}
Line = integer()
Column = integer()
Indent = integer()
Comment = {Line, Column, Indent, Text}
Text = [string()]
Joins individual comment lines into multi-line comments. The input is a list of entries representing individual comment lines, in
order of decreasing line-numbers ; see scan_lines/1 for details. The result is a list of entries representing multi-line comments,
still listed in order of decreasing line-numbers , but where for each entry, Text is a list of consecutive comment lines in order of
increasing line-numbers (i.e., top-down).
See also: scan_lines/1 .
scan_lines(Text::string()) -> [CommentLine]
Types CommentLine = {Line, Column, Indent, Text}
Line = integer()
Column = integer()
Indent = integer()
Text = string()
Extracts individual comment lines from a source code string. Returns a list of comment lines found in the text, listed in order of
decreasing line-numbers, i.e., the last comment line in the input is first in the resulting list. Text is a single string, contain-
ing all characters following (but not including) the first comment-introducing % character on the line, up to (but not including)
the line-terminating newline. For details on Line , Column and Indent , see file/1 .
string(Text::string()) -> [Comment]
Types Comment = {Line, Column, Indentation, Text}
Line = integer()
Column = integer()
Indentation = integer()
Text = [string()]
Extracts comments from a string containing Erlang source code. Except for reading directly from a string, the behaviour is the same
as for file/1 .
See also: file/1 .
AUTHORS
Richard Carlsson <richardc@it.uu.se >
syntax_tools 1.6.7 erl_comment_scan(3erl)