My below code works fine if none of the columns has pipe as its content in it, If it has the pipe in any of the content then the value moves to the next column.
I wanted my code to work fine even if the column has pipe in it apart from the delimiter.
NOTE : If there is a pipe in the content apart from the delimiter it is been escaped by \(backslash)
I have a m X n matrix written out to file, say like this:
1,2,3,4,5,6
2,6,3,10,34,67
1,45,6,7,8,8
I want to calculate the column averages in the MINIMUM amount of code or processing possible. I would have liked to use my favorite tool, "AWK" but since it processes rowwise, getting the... (5 Replies)
hi
i have file which hav following entries
1501,AAA,2.00
1525,AAA,2.00
1501,AAA,2.00
1525,AAA,2.00
1501,AAA,3.00
1525,AAA,3.00
1525,AAA,3.00
1501,AAA,3.00
1501,AAA,3.00
i want to have a o/p coloum wise
like
1501,AAA,13
1525,AAA,10
here 13 comes as a sum of last colum value... (6 Replies)
Hi,
I have two files. Want to make an addition of the fifth column of from both the files and redirect it to a third file.
Both files have same records except fifth field and same record should be inserted into new file having fifth field as addition of fifth fields of both files.
for... (2 Replies)
Hi All,
I have two txt files like this
File1:
no name
----------
12 aaaa
23 bbbb
55 cccc
File2
dname dno
------------
civil 33
mech 55
arch 66
Now i want to compare col1 from File and col2 from File2, if its match i want fetch all columns from... (3 Replies)
Hello All ,
I have a problem with summing of column by group
Input File -
COL_1,COL_2,COL_3,COL_4,COL_5,COL_6,COL_7,COL_8,COL_9,COL_10,COL_11
3010,21,1923D ,6,0,0.26,0,0.26,-0.26,1,200807
3010,21,192BI ,6,24558.97,1943.94,0,1943.94,22615.03,1,200807
3010,21,192BI... (8 Replies)
i have a file which has a column that is unique
i am intending to serach it and if it is there to remove the row.
the file looks like
ROLLNO,NAME ,SUB1,SUB2,SUB3,TOTAL,PERCENTAGE,RESULT
15 ,rig ,34 ,56 ,87 ,177 ,59 % ,PASS
23 ,wel ,45 ,76 ,56 ,177 ,59 % ... (0 Replies)
Scottn, m really sorry but i have not got my answer yet.
my concern is how to delete the row !!!
i have a file which has a column that is unique
i am intending to serach it and if it is there to remove the row.
the file looks like
ROLLNO,NAME ,SUB1,SUB2,SUB3,TOTAL,PERCENTAGE,RESULT... (9 Replies)
awk '{ gsub(/....=/,""); print }' want.dat >final.dat
the above awk command which removes all the chars before and including '=' on the entire row. --thats what it meant be.:)
but i need to remove text on column-wise on each row.
many thanks,
EM
---------- Post updated at 10:00 AM... (4 Replies)
Hi I have pasted sample data as below:- in data.txt
Please suggest any way out: as the 3rd field is
cat data.txt
22:37:34 STARTING abc
22:37:40 FAILURE sadn
00:06:42 STARTING asd
00:06:51 FAILURE ad
02:06:38 STARTING acs
02:06:46 FAILURE cz
04:06:35 STARTING xzc... (1 Reply)
Discussion started by: Gaurav198
1 Replies
LEARN ABOUT BSD
pipe
PIPE(2) System Calls Manual PIPE(2)NAME
pipe - create an interprocess communication channel
SYNOPSIS
pipe(fildes)
int fildes[2];
DESCRIPTION
The pipe system call creates an I/O mechanism called a pipe. The file descriptors returned can be used in read and write operations. When
the pipe is written using the descriptor fildes[1] up to 4096 bytes of data are buffered before the writing process is suspended. A read
using the descriptor fildes[0] will pick up the data.
It is assumed that after the pipe has been set up, two (or more) cooperating processes (created by subsequent fork calls) will pass data
through the pipe with read and write calls.
The shell has a syntax to set up a linear array of processes connected by pipes.
Read calls on an empty pipe (no buffered data) with only one end (all write file descriptors closed) returns an end-of-file.
Pipes are really a special case of the socketpair(2) call and, in fact, are implemented as such in the system.
A signal is generated if a write on a pipe with only one end is attempted.
RETURN VALUE
The function value zero is returned if the pipe was created; -1 if an error occurred.
ERRORS
The pipe call will fail if:
[EMFILE] Too many descriptors are active.
[ENFILE] The system file table is full.
[EFAULT] The fildes buffer is in an invalid area of the process's address space.
SEE ALSO sh(1), read(2), write(2), fork(2), socketpair(2)BUGS
Should more than 4096 bytes be necessary in any pipe among a loop of processes, deadlock will occur.
4th Berkeley Distribution August 26, 1985 PIPE(2)