I need a sed line that will take STDM111 and change it to STDM161
the STDM will always be constant but the 3 numbers after will be random, I just need it to always replace the middle number with 6 regardless of what the numbers are. (8 Replies)
Good day,
First off, I would just like to say that I've been helped by a lot of the posts here in my own scripting work in the past few months. I've been a long time roamer, but first time poster. That being said, I'm stuck trying to figure out this issue (For computational research, not a... (4 Replies)
Hi,
I've been trying to replace the numbers in the first column of my text file with all ones, unless the number is equal to 8. I have this:
1 1 11 123 258
2 1 9 135 175
1 1 15 143 274
8 1 13 153 172
8 1 13 154 166
8 1 13 154 167
3 1 15 237 255
4 1 15 243 202
1 1 13 133 166... (4 Replies)
Hi all,
I need to run a number of scripts which have a certain phrase on them so I have identified these by;
grep -l 100 *script | sort -u
Normally I could just run something along the lines of;
for i in `grep -l 100 *script | sort -u`; do ./${i}; done
However before I run each of... (0 Replies)
Hi experts,
My csv file looks like this
U;cake;michael;temp;;;;
U;bread;john;temp;;;;
U;cocktails;sarah;temp;;;;
I'd like to change the value fo 2nd column to cf+random number , which will look maybe something like this
U;cf20187;michael;temp;;;;
U;cf8926;john;temp;;;;... (7 Replies)
Dear all,
I have a question. I have a txt file say 4000 rows X 1800 Column. I 'd like to creat a new column as the first column which is a column of random numbers (n=4000)
thanks a lot!
Lin (2 Replies)
Hi all,
I want to count total no. of characters in a column. and if no. of charaters are more than 3 then it must replace it by splitted string. ie, it must place a space after 3 characters.
Ex:
21 435g asd3dd jklfjwe wer
column number 3 has 4 alphanumeric character, so it must be splitted... (3 Replies)
Hi Experts,
Need your support
I want to group/concatenate column 1,2,12 and 13 and if found duplicate then need to sum value of column 17,20,21 and column22. After concatenation if found unique then no action to be taken.
Secondly want to make duplicate rows basis on grouping/concatenation of... (1 Reply)
Hello
Take this file...
Test01
Ref test
Version 01
Test02
Ref test
Version 02
Test66
Ref test
Version 66
Test99
Ref test
Version 99
I want to substitute every occurrence of Test{2} with a unique random number, so for example, if I was using sed, substitution would be something... (1 Reply)
Discussion started by: funkman
1 Replies
LEARN ABOUT MOJAVE
rand_r
RAND(3) BSD Library Functions Manual RAND(3)NAME
rand, rand_r, srand, sranddev -- bad random number generator
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
rand(void);
int
rand_r(unsigned *seed);
void
srand(unsigned seed);
void
sranddev(void);
DESCRIPTION
These interfaces are obsoleted by arc4random(3).
The rand() function computes a sequence of pseudo-random integers in the range of 0 to RAND_MAX (as defined by the header file <stdlib.h>).
The srand() function sets its argument seed as the seed for a new sequence of pseudo-random numbers to be returned by rand(). These
sequences are repeatable by calling srand() with the same seed value.
If no seed value is provided, the functions are automatically seeded with a value of 1.
The sranddev() function initializes a seed, using the random(4) random number device which returns good random numbers. However, the rand()
function still remains unsuitable for cryptographic use.
The rand_r() function provides the same functionality as rand(). A pointer to the context value seed must be supplied by the caller.
SEE ALSO arc4random(3), random(3), random(4)STANDARDS
The rand() and srand() functions conform to ISO/IEC 9899:1990 (``ISO C90'').
The rand_r() function is as proposed in the POSIX.4a Draft #6 document.
BSD May 25, 1999 BSD