Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Replace randomly occurrences bash Post 303044400 by rdrtx1 on Thursday 20th of February 2020 11:31:53 AM
Old 02-20-2020
Code:
awk '
BEGIN{srand();}
{
fstr=":";
for (fld in fields) delete fields[fld];
while (gsub(":", ":", fstr) <= (NF*(pct/100.0))) {
rnd=rand();
sub("^[^.]*[.]", "", rnd);
fld=((rnd+1) % NF) + 1;
if (fstr !~ ":" fld ":") fstr=fstr fld ":";
}
sub("^:*", "", fstr);
sub(":*$", "", fstr);
n=split(fstr, arr, ":");
for (i=1; i<=n; i++) fields[arr[i]]=i;
for (i=1; i<=NF; i++) $i=(i in fields) ? repstr : $i;
print $0;
}
' pct=50 repstr="b" file


Last edited by rdrtx1; 02-20-2020 at 12:43 PM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

how to select a value randomly

on my desktop i am using the kde rotating desktop image option. this rotates images randomly every half hour. now, i would like to write an html file which will have an inline frame with some text, maybe system messages, or my friends live journal thati read alot, or unix.com! however, i dont want... (1 Reply)
Discussion started by: norsk hedensk
1 Replies

2. UNIX for Dummies Questions & Answers

randomly renaming files

I have a directory of files that look like filename 001.ext, filename 002.ext, etc. I'd like to rename the files with unique random numbered names, so that the original filenames are stripped and the files are given a new, random number name. I'm not super new to UNIX, but I don't often use it for... (2 Replies)
Discussion started by: platz
2 Replies

3. Shell Programming and Scripting

sed replace multiple occurrences on the same line, but not all

Hi there! I am really enjoying working with sed. I am trying to come up with a sed command to replace some occurrences (not all) in the same line, for instance: I have a command which the output will be: 200.300.400.5 0A 0B 0C 01 02 03 being that the last 6 strings are actually one... (7 Replies)
Discussion started by: ppucci
7 Replies

4. Shell Programming and Scripting

awk and gsub - how to replace only the first X occurrences

I have a text (text.txt) and I would like to replace only the first 2 occurrences of a word (but I might need to replace more): For example, if text is this: CAR sweet head hat red yellow CAR book brown tiger CAR cow CAR CAR milk I would like to replace the word "CAR" with word... (12 Replies)
Discussion started by: bingel
12 Replies

5. Shell Programming and Scripting

Cron job randomly once a day

I want to create a cron job randomly once a day for my site's registration. The responsible file for registrations is a config file and I need to change the contents twice on day (on and off) I know the way for random cron job for example */n * * * * /usr/local/bin/php... (6 Replies)
Discussion started by: lucker
6 Replies

6. UNIX for Dummies Questions & Answers

Replace all occurrences of strings with parentheses

Hi, I tried to adapt bartus's solution to my problem, without success. I want to replace all the occurences of this: with: , where something can contain an arbitrary number of balanced parens and brakets. Any ideas ? Best, (1 Reply)
Discussion started by: ff1969ff1969
1 Replies

7. Programming

Java application dying randomly

Hi, (First post, please be gental!) I have a java app that I am running on unix (centos) But it keeps dying randomly. The times seem random from anything between 3 hours and 3 days. I have a cronjob running to restart it when ever it dies but I would rather this happened less often. ... (2 Replies)
Discussion started by: sm9ai
2 Replies

8. Shell Programming and Scripting

Get 20% of lines in File randomly

Hello, This is my code: nb_lignes=`wc -l $1 | cut -d " " -f1` for i in $(seq $nb_lignes) do m=`head $1 -n $i | tail -1` //command done Please how can i change it to get Get 20% of lines in File randomly to apply "command" on each line ? 20% or 40% or 60 % (it's a parameter) Thank you. (15 Replies)
Discussion started by: chercheur857
15 Replies

9. UNIX for Dummies Questions & Answers

BASH - Counting word occurrences in a Web Page

Hi all, I have to do a script bash (for university) that counts all word occurrences in a specific web page. anyone can help me?. Thanks :) (1 Reply)
Discussion started by: piacentero
1 Replies

10. Shell Programming and Scripting

Randomly create time in UNIX

Hey, How can i create randomly create time N times. Suppose i want to create data for a particualr date 5 times... Mon Jan 19 11:42:50 Mon Jan 19 19:16:40 Mon Jan 19 12:12:33 Mon Jan 19 14:26:27 Mon Jan 19 12:29:53 Mon Jan 19 13:30:31 I want the script to create N times randome... (2 Replies)
Discussion started by: jaituteja
2 Replies
Tcl_CallWhenDeleted(3)					      Tcl Library Procedures					    Tcl_CallWhenDeleted(3)

__________________________________________________________________________________________________________________________________________________

NAME
Tcl_CallWhenDeleted, Tcl_DontCallWhenDeleted - Arrange for callback when interpreter is deleted SYNOPSIS
#include <tcl.h> Tcl_CallWhenDeleted(interp, proc, clientData) Tcl_DontCallWhenDeleted(interp, proc, clientData) ARGUMENTS
Tcl_Interp *interp (in) Interpreter with which to associated callback. Tcl_InterpDeleteProc *proc (in) Procedure to call when interp is deleted. ClientData clientData (in) Arbitrary one-word value to pass to proc. _________________________________________________________________ DESCRIPTION
Tcl_CallWhenDeleted arranges for proc to be called by Tcl_DeleteInterp if/when interp is deleted at some future time. Proc will be invoked just before the interpreter is deleted, but the interpreter will still be valid at the time of the call. Proc should have arguments and result that match the type Tcl_InterpDeleteProc: typedef void Tcl_InterpDeleteProc( ClientData clientData, Tcl_Interp *interp); The clientData and interp parameters are copies of the clientData and interp arguments given to Tcl_CallWhenDeleted. Typically, clientData points to an application-specific data structure that proc uses to perform cleanup when an interpreter is about to go away. Proc does not return a value. Tcl_DontCallWhenDeleted cancels a previous call to Tcl_CallWhenDeleted with the same arguments, so that proc will not be called after all when interp is deleted. If there is no deletion callback that matches interp, proc, and clientData then the call to Tcl_DontCallWhen- Deleted has no effect. KEYWORDS
callback, delete, interpreter Tcl 7.0 Tcl_CallWhenDeleted(3)
All times are GMT -4. The time now is 02:05 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy