10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hi all,
trying this using shell/bash with sed/awk/grep
I have two files, one containing one column, the other containing multiple columns (comma delimited).
file1.txt
abc12345
def12345
ghi54321
...
file2.txt
abc1,text1,texta
abc,text2,textb
def123,text3,textc
gh,text4,textd... (6 Replies)
Discussion started by: shogun1970
6 Replies
2. UNIX for Beginners Questions & Answers
hi
I have 2 file with more than 10 columns for both
1st file
apple,0,0,0......
orange,1,2,3.....
mango,2,4,5.....
2nd file
apple,2,3,4,5,6,7...
orange,2,3,4,5,6,8...
watermerlon,2,3,4,5,6,abc...
mango,5,6,7,4,6,def.... (1 Reply)
Discussion started by: tententen
1 Replies
3. Shell Programming and Scripting
Hello gurus,
I have a database of possible primary signal strings
pp22
pt22dx
pp22dx
jty2234
Also I have a list of scrambled signals which has a shorter string and a longer string separated by // (double slash ). Always the shorter string of a scrambled signal will have the primary... (6 Replies)
Discussion started by: senhia83
6 Replies
4. Shell Programming and Scripting
I am looking at the NR==FNR posts and trying to use them to achieve the following but I am not getting it.
I have 2 files. I want to match column 8 in file 1 with column 2 in file 2. When they match I want to replace column 9 in file 1 with column 1 in file 2.
This is and extract from file 1
... (5 Replies)
Discussion started by: kieranfoley
5 Replies
5. Shell Programming and Scripting
(3 Replies)
Discussion started by: Rishabh Jain
3 Replies
6. Shell Programming and Scripting
Hi all,
I have 2 files, the first one containing a list of ids and the second one is a master file. I want to search each id from the first file from the 5th col in the second file. The 5th column in master file has values separated by ';', if not a single value is present.
Each id must occur... (2 Replies)
Discussion started by: ritakadm
2 Replies
7. Shell Programming and Scripting
File A
B07 U51C 4434 L662C 4412
B07 L64U 612 L651B 4434
B07 L11C 4434 R151B 4434
B05 L12Z 612 L51B 4434
B01 651Z 612 L651C 4434
B04 A51Z 612 L51A 4434
L07 B08D 4434 B1B 4434
B07 RU8D 4434 L51A 4434
B07 L58D 4434 B51C 4434
B07 LA8D 4434 L4B 4434
Now i want File B Output
B07... (2 Replies)
Discussion started by: asavaliya
2 Replies
8. Shell Programming and Scripting
Hello all, please help. There are two file like this:
file1:
1197510.0 294777.7 9666973.0 21.6 1839.8
1197510.0 294777.7 9666973.0 413.2 2075.9
1197510.0 294777.7 9666973.0 689.3 2260.0
... (1 Reply)
Discussion started by: attila
1 Replies
9. Shell Programming and Scripting
Match column 3 in file1 to column 1 in file 2 and replace with column 2 from file2
file 1 sample
SNDK 80004C101 AT
XLNX 983919101 BB
NETL 64118B100 BS
AMD 007903107 CC
KLAC 482480100 DC
TER 880770102 KATS
ATHR 04743P108 KATS... (7 Replies)
Discussion started by: rydz00
7 Replies
10. Shell Programming and Scripting
Hi,
I want to find a file / directory with the name xxxxCELLxxx in the given path. The CELL is can be either in a UPPER or lower case.
Thanks (4 Replies)
Discussion started by: youknowme
4 Replies
MEMMEM(3) Linux Programmer's Manual MEMMEM(3)
NAME
memmem - locate a substring
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <string.h>
void *memmem(const void *haystack, size_t haystacklen,
const void *needle, size_t needlelen);
DESCRIPTION
The memmem() function finds the start of the first occurrence of the substring needle of length needlelen in the memory area haystack of
length haystacklen.
RETURN VALUE
The memmem() function returns a pointer to the beginning of the substring, or NULL if the substring is not found.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
+----------+---------------+---------+
|Interface | Attribute | Value |
+----------+---------------+---------+
|memmem() | Thread safety | MT-Safe |
+----------+---------------+---------+
CONFORMING TO
This function is not specified in POSIX.1, but is present on a number of other systems.
BUGS
In glibc 2.0, if needle is empty, memmem() returns a pointer to the last byte of haystack. This is fixed in glibc 2.1.
SEE ALSO
bstring(3), strstr(3)
COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
GNU
2017-03-13 MEMMEM(3)