My apologies, I have corected the typo in post 1 and here as well. All 3 uniq values in f1 will always be different I just transcribed them wrong. Line 3 (the duplicate) will never be there (computers make less mistakes) . Thank you .
Hi,
I am having file which contains around 15 columns, i need to fetch column 3,12,14 based on the condition that column 3 starts with 40464
this is the sample data
how to achieve that (3 Replies)
I’m trying to modify someone perl script to fix a bug. The piece of code checks that the zone name you want to add is unique. However, when the code runs, it finds a partial match using grep, and decides it already exists, so the “create” command exits.
$cstatus = `${ZADM} list -vic | grep... (3 Replies)
Hi, I was trying to figure this out but failed so I hope someone here can help me, thank you in advance.
I have two files.
file1: aa M
bb N
cc O
dd P
ee Q file2: aa A_87_P254063
cc A_87_P016532
bb A_87_P104793
dd A_87_P055331
ee A_87_P059706
aa A_87_P071636
ee A_87_P028302... (2 Replies)
Hi I have a question and hope I can get answer here. Thank you in advance.
I have two files:
file1:
aa X
bb Y
cc Z
file2:
cc A
bb B
dd C
aa D
bb E
If the 1st column match in both file1 and file2, the 2nd column in file2 will be replaced by the 2nd column in file1. If there is no... (2 Replies)
I posted the incorrect files yesterday and apologize. I also modified the awk script but with no luck. There are two text files in the zip (name.txt and output.txt). I am trying to match $2 in name.txt with $1 in output.txt and if they match then $1 of name.txt is copied to $7 of output.txt. ... (7 Replies)
I have a specific set (all ending with .bam) of downloaded files in a directory /home/cmccabe/Desktop/NGS/API/2-15-2016. What I am trying to do is use a match to $2 in name to rename the downloaded files. To make things a more involved the date of the folder is unique and in the header of name... (1 Reply)
Hi All,
I have 100 folders with the first delimiter has a unique name i.e (123_hello and 575_hello) and each folder have atlist 1000 plus files with naming convention i.e (575_hello_1.iso ... 575_hello_1000.iso).
575_hello/575_hello_1.iso
575_hello/575_hello_2.iso
575_hello/575_hello_3.iso... (8 Replies)
Hi, I have a tab delimited text file like this one. I need to do a partial match of a particular cell and then replace matches with an empty cell. So here is a sample:
Smith FordMustang ChevroletCamaro
Miller FordFiesta
Jones KiaSorrento
Davis ChevroletCamaro
Johnson ToyotaHighlander
I... (4 Replies)
I am trying to create a cronjob that will run on startup that will look at a list.txt file to see if there is a later version of a database using database.txt as the source. The matching lines are written to output.
$1 in database.txt will be in list.txt as a partial match. $2 of database.txt... (2 Replies)
In the portion of bash below I am using rename to match the $id variable to $file and when a match (there will alwsys be one) is found then the $id is removed from each bam and bam.bai in $file and _test is added to thee file name before the extension. Each of the variables is set correctly but... (3 Replies)
Discussion started by: cmccabe
3 Replies
LEARN ABOUT DEBIAN
strtok
STRTOK(3) Linux Programmer's Manual STRTOK(3)NAME
strtok, strtok_r - extract tokens from strings
SYNOPSIS
#include <string.h>
char *strtok(char *str, const char *delim);
char *strtok_r(char *str, const char *delim, char **saveptr);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
strtok_r(): _SVID_SOURCE || _BSD_SOURCE || _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE
DESCRIPTION
The strtok() function parses a string into a sequence of tokens. On the first call to strtok() the string to be parsed should be specified
in str. In each subsequent call that should parse the same string, str should be NULL.
The delim argument specifies a set of bytes that delimit the tokens in the parsed string. The caller may specify different strings in
delim in successive calls that parse the same string.
Each call to strtok() returns a pointer to a null-terminated string containing the next token. This string does not include the delimiting
byte. If no more tokens are found, strtok() returns NULL.
A sequence of two or more contiguous delimiter bytes in the parsed string is considered to be a single delimiter. Delimiter bytes at the
start or end of the string are ignored. Put another way: the tokens returned by strtok() are always nonempty strings.
The strtok_r() function is a reentrant version strtok(). The saveptr argument is a pointer to a char * variable that is used internally by
strtok_r() in order to maintain context between successive calls that parse the same string.
On the first call to strtok_r(), str should point to the string to be parsed, and the value of saveptr is ignored. In subsequent calls,
str should be NULL, and saveptr should be unchanged since the previous call.
Different strings may be parsed concurrently using sequences of calls to strtok_r() that specify different saveptr arguments.
RETURN VALUE
The strtok() and strtok_r() functions return a pointer to the next token, or NULL if there are no more tokens.
CONFORMING TO
strtok()
SVr4, POSIX.1-2001, 4.3BSD, C89, C99.
strtok_r()
POSIX.1-2001.
BUGS
Be cautious when using these functions. If you do use them, note that:
* These functions modify their first argument.
* These functions cannot be used on constant strings.
* The identity of the delimiting byte is lost.
* The strtok() function uses a static buffer while parsing, so it's not thread safe. Use strtok_r() if this matters to you.
EXAMPLE
The program below uses nested loops that employ strtok_r() to break a string into a two-level hierarchy of tokens. The first command-line
argument specifies the string to be parsed. The second argument specifies the delimiter byte(s) to be used to separate that string into
"major" tokens. The third argument specifies the delimiter byte(s) to be used to separate the "major" tokens into subtokens.
An example of the output produced by this program is the following:
$ ./a.out 'a/bbb///cc;xxx:yyy:' ':;' '/'
1: a/bbb///cc
--> a
--> bbb
--> cc
2: xxx
--> xxx
3: yyy
--> yyy
Program source
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int
main(int argc, char *argv[])
{
char *str1, *str2, *token, *subtoken;
char *saveptr1, *saveptr2;
int j;
if (argc != 4) {
fprintf(stderr, "Usage: %s string delim subdelim
",
argv[0]);
exit(EXIT_FAILURE);
}
for (j = 1, str1 = argv[1]; ; j++, str1 = NULL) {
token = strtok_r(str1, argv[2], &saveptr1);
if (token == NULL)
break;
printf("%d: %s
", j, token);
for (str2 = token; ; str2 = NULL) {
subtoken = strtok_r(str2, argv[3], &saveptr2);
if (subtoken == NULL)
break;
printf(" --> %s
", subtoken);
}
}
exit(EXIT_SUCCESS);
}
Another example program using strtok() can be found in getaddrinfo_a(3).
SEE ALSO index(3), memchr(3), rindex(3), strchr(3), string(3), strpbrk(3), strsep(3), strspn(3), strstr(3), wcstok(3)COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2012-05-10 STRTOK(3)