Hi
I have a input file in the format
ABC,111,2008Q2, 49K
ABC,111,2008Q3, 0K
ABC,111,2008Q4, 0K
ABC,222,2008Q2, 49K
ABC,222,2008Q3, 0K
ABC,222,2008Q4, 0K
XYZ,111,2008Q2, 49K
XYZ,111,2008Q3, 0K
XYZ,111,2008Q4, 0K
XYZ,222,2008Q2, 49K
XYZ,222,2008Q3, 0K
XYZ,222,2008Q4, 0K
The output file... (3 Replies)
Hi I have an input file and I want to transpose it but I need to take care that if any field is missing for a record it should be popoulated with space for that field - using a shell script
INFILE
----------
emp=1
sal=2
loc=abc
emp=2
sal=21
sal=22
loc=xyz
emp=5
loc=abc
OUTFILE... (10 Replies)
Hi I need a bash shell script that will take text files with 4 rows and different numbers of columns in each row and convert each one into a text file with just one column.
I then subtract 1.5 from each number in the column (I have that part already)
The next step after that is I want to have... (10 Replies)
I have done a couple of searches on this and have found many threads but I don't think I've found one that is useful to me - probably because I have very basic comprehension of perl and beginners shell so trying to manipulate a script already posted maybe beyond my capabilities....
Anyway - I... (26 Replies)
We receive a file which usually has 40 to 50 million rows. I want to set up an audit process by which everytime we receive a file we audit it for # of rows and total number of columns.
So if the # of rows is around 1 million on a particular day, I want to raise a flag or send an email....and if... (3 Replies)
Hello,
I have a huge tab delimited file with around 40,000 columns and 900 rows I want to convert columns to a row.
INPUT file look like this.
the first line is a headed of a file.
ID marker1 marker2 marker3 marker4
b1 A G A C ... (5 Replies)
Hi,
I'd like to swap the columns 1 and 2 of a space-delimited text file but only for the first 1000 rows. How do I go about doing that? Thanks! (1 Reply)
Hi,
I have a requirement to convert rows into columns. data looks like:
c1,c2,c3,..
r1,r2,r3,..
p1,p2,p3,..
and so on..
output shud be like this:
c1,r1,p1,..
c2,r2,p2,..
c3,r3,p3,..
Thanks in advance, (12 Replies)
Hi Friends,
I have come across some files where some of the columns don not have data.
Key, Data1,Data2,Data3,Data4,Data5
A,5,6,,10,,
A,3,4,,3,,
B,1,,4,5,,
B,2,,3,4,,
If we see the above data on Data5 column do not have any row got filled. So remove only that column(Here Data5) and... (4 Replies)
GETLINE(3) Linux Programmer's Manual GETLINE(3)NAME
getline, getdelim - delimited string input
SYNOPSIS
#define _GNU_SOURCE
#include <stdio.h>
ssize_t getline(char **lineptr, size_t *n, FILE *stream);
ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream);
DESCRIPTION
getline() reads an entire line, storing the address of the buffer containing the text into *lineptr. The buffer is null-terminated and
includes the newline character, if a newline delimiter was found.
If *lineptr is NULL, the getline() routine will allocate a buffer for containing the line, which must be freed by the user program. Alter-
natively, before calling getline(), *lineptr can contain a pointer to a malloc()-allocated buffer *n bytes in size. If the buffer is not
large enough to hold the line read in, getline() resizes the buffer to fit with realloc(), updating *lineptr and *n as necessary. In either
case, on a successful call, *lineptr and *n will be updated to reflect the buffer address and size respectively.
getdelim() works like getline(), except a line delimiter other than newline can be specified as the delimiter argument. As with getline(),
a delimiter character is not added if one was not present in the input before end of file was reached.
RETURN VALUE
On success, getline() and getdelim() return the number of characters read, including the delimiter character, but not including the termi-
nating null character. This value can be used to handle embedded null characters in the line read.
Both functions return -1 on failure to read a line (including end of file condition).
ERRORS
EINVAL Bad parameters (n or lineptr is NULL, or stream is not valid).
EXAMPLE
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
FILE * fp;
char * line = NULL;
size_t len = 0;
ssize_t read;
fp = fopen("/etc/motd", "r");
if (fp == NULL)
exit(EXIT_FAILURE);
while ((read = getline(&line, &len, fp)) != -1) {
printf("Retrieved line of length %zu :
", read);
printf("%s", line);
}
if (line)
free(line);
return EXIT_SUCCESS;
}
CONFORMING TO
Both getline() and getdelim() are GNU extensions. They are available since libc 4.6.27.
SEE ALSO read(2), fopen(3), fread(3), gets(3), fgets(3), scanf(3)GNU 2001-10-07 GETLINE(3)