Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: how to generate a random list from a given list
Top Forums Shell Programming and Scripting how to generate a random list from a given list Post 302075049 by aigles on Tuesday 30th of May 2006 03:30:40 AM
Old 05-30-2006
Try something like this
Code:
#! /usr/bin/ksh
#
# Usage: $0 [file [count]]
# 

File=${1}
Count=${2:-10}

while read line
do
   echo "$RANDOM§$line"
done < $File     |  \
sort -t§ -k1,1n  |  \
head -$Count     |  \
cut -d§ -f2-

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

how to generate a list of files

Hello people I need to find a way to generate a file that contains the names of all *.jpg files that were generated after a specific date The search should start in my current folder and recursively search inner folders It would be best to list the file names one below the other in the output... (3 Replies)
Discussion started by: jasongr
3 Replies

2. UNIX for Advanced & Expert Users

How to generate a 'kill' list

Hi, I want to write a script which can generate a kill list for killing process, program name start with f60.., which have been running for more than 8 hours, the list output should looks like: kill -9 4444176 kill -9 4674520 kill -9 4454180 kill -9 4994523 Can anyone help how to write... (10 Replies)
Discussion started by: victorcheung
10 Replies

3. Shell Programming and Scripting

Script to generate a list of number

How can I generate a list of numbers and place all of these numbers in a line-by-line into a file. I am new to scripting actually. 0501000000 to 0509999999 i.e. 0501000000 0501000001 ...... 0509999999 set 02 0551000000 to 0559999999 i.e. 0551000000 0551000001 ...... 0559999999 ... (3 Replies)
Discussion started by: noo
3 Replies

4. Shell Programming and Scripting

How to generate the list?

Reference post, https://www.unix.com/shell-programming-scripting/131307-incrementing-twist-please-help.html , I can generate a word list easily, by echo or for loop. For example, with the echo command and word expect, I can list all 6 letters possibility (6X6X6X6X6X6=46656) echo... (6 Replies)
Discussion started by: rdcwayx
6 Replies

5. Shell Programming and Scripting

Generate a change list of files/dir

Is there a tool that can diff a directory and generate a change list of files in that directory based on a previous snapshot on the directory? For example /etc/a.txt:changed /etc/b.txt:removed /etc/c.txt:added Thanks! (1 Reply)
Discussion started by: overmindxp
1 Replies

6. Solaris

list any random first 5 files with 'ls'

I just need to see any number of random files to see the owner, group and permissions information since all the files in the directory have the same permissions and ownership information. Is it possible just to list any 5 files without going thru the series of commands such as "ls -ltu | head -5"... (8 Replies)
Discussion started by: yoonkim
8 Replies

7. UNIX for Dummies Questions & Answers

Generate list of deleted files

I copied all JPEGs from my laptop to an external drive using find . -name "*.jpg" -exec cp '{}' ./media/Backup/pictures \; And then deleted all of them from my laptop. Now, I realize that I need the folder path of all the original JPEGs as the path has the important information. I dont... (1 Reply)
Discussion started by: eshwaconsulting
1 Replies

8. Shell Programming and Scripting

Generate list of directories that a user has access to

I manage an AIX OS 7.1 system on IBM Power 770. I want to find out which directories/folders a particular user has read/write access to. How can I cleanly create a list of all directories on the system that a user has access to.. Does this make sense? Thanks in Advance, NEWB:rolleyes: (3 Replies)
Discussion started by: code911
3 Replies

9. Shell Programming and Scripting

Need to generate a file with random data. /dev/[u]random doesn't exist.

Need to use dd to generate a large file from a sample file of random data. This is because I don't have /dev/urandom. I create a named pipe then: dd if=mynamed.fifo do=myfile.fifo bs=1024 count=1024 but when I cat a file to the fifo that's 1024 random bytes: cat randomfile.txt >... (7 Replies)
Discussion started by: Devyn
7 Replies

10. Shell Programming and Scripting

Generate list of letters

Heyas I want to list passed arguments and make an incrementing 'marker'. That 'marker' should be a letter between a-z, in proper order. I'm not aware of a seq pendant, so i tried it with this: C=141 list="" while ];do printf \\$C list+=" \\$C" C=$((C+1)) done echo... (3 Replies)
Discussion started by: sea
3 Replies

LEARN ABOUT OPENSOLARIS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh,
       /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh,
       /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list.

       Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1).

FILES

       /etc/shells    list of shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.11							    20 Nov 2007 							 shells(4)
All times are GMT -4. The time now is 01:40 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy