I have 2 files pipe delimted and want to merge them based on a key
e.g file 1
123$aaa$yyy$zzz
345$xab$yzy$zyz
456$sss$ttt$foo
799$aaa$ggg$dee
file 2
123$hhh
345$ddd
456$xxx
888$zzz
so if the key is the first field, and the result should be the common key between file 1 and 2 (6 Replies)
Help in writing a script using sed which updates fileOne with the contents from fileTwo
Example:
Contents of fileOne
1,111111
2,897823
3,235473
4,222222
Contents of fileTwo
1,111111,A,1,2
4,222222,A,2,2
5,374632,A,3,2
6,374654,A,4,2
Final File should be:
1,111111,A,1,2... (9 Replies)
Hello everyone!!
I am not completely new to shell script but I havent been able to find the answer to my problem and I'm sure there are some smart brains here up for the challenge :D.
I have several CSV files that I need to combine into one, but I also need to know where each row came from.... (7 Replies)
:confused:Hello -- i just joined the forums. I am a complete noob -- only about 1 week into learning how to program anything... and starting with linux.
I am working in Linux terminal.
I have a folder with a bunch of txt files. Each file has several lines of html code. I want to combine... (2 Replies)
I have lot of csv file collected from script like below :
Name of files (some examples) there are thousands of it:
192.168.0.123_251_18796_1433144473.csv
192.168.0.123_251_18796_1433144772.csv
192.168.0.123_251_18796_1433145073.csv
192.168.0.123_251_18796_1433145372.csvContent of each... (5 Replies)
Hi all,
I have two separate csv files(comma delimited) file 1 and file 2.
File 1 contains
PAN,NAME,Salary
AAAAA5467D,Raj,50000
AAFAC5467D,Ram,60000
BDCFA5677D,Kumar,90000
File 2 contains
PAN,NAME,Dept,Salary
ASDFG6756T,Karthik,ABC,450000
QWERT8765Y,JAX,CDR,780000... (5 Replies)
I am trying to merge all csv files from source path into one single csv file in target. but getting error message:
hadoop fs -cat /user/hive/warehouse/stage.db/PK_CLOUD_CHARGE/TCH-charge_*.csv > /user/hive/warehouse/stage.db/PK_CLOUD_CHARGE/final/TCH_pb_charge.csv
getting error message:... (0 Replies)
I have a CSV with 6 coloumn. I need to replace a ',' with '|' in the 4th coloumn of a CSV only so i can upload in Database. When i Upload now, commas used in the text in the 4th coloumn are treated as delimiter and remaining text goes to the next coloumn. Any solutions to replace, thanks. (1 Reply)
Hi all,
i need help.
I have two csv files with a huge amount of data.
I need the first column of the first file, to be compared with the data of the second, to have at the end a file with the data not present in the second file.
Example
File1: (only one column)
profile_id
57036226... (11 Replies)
Discussion started by: SirMannu
11 Replies
LEARN ABOUT REDHAT
getline
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)