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Full Discussion: awk - function to return permutations of n items out of m
Top Forums Shell Programming and Scripting awk - function to return permutations of n items out of m Post 303028502 by wisecracker on Wednesday 9th of January 2019 03:07:48 PM
Old 01-09-2019
Quote:
Originally Posted by nezabudka
Thank you all for an evaluation
Probably there should replace the heavyweight utility "xargs" and wrap everything in a function
like so
Code:
#!/bin/bash
prt() {
        str=$(seq -s"{$1..$2}" $3)
        eval echo ${str//[0-9]}
}
prt a e $((3+1)) | fmt -1 | sed 's/./& /g'

Or insert a loop "for in" as suggested above.
In ksh93 works too
Too many pipes and transient commands, (utilities)...
However $((3+1)) should be $((2+1)) or $((3)) on OSX 10.14.1, default bash terminal...
Code:
Last login: Wed Jan  9 19:58:11 on ttys000
AMIGA:amiga~> cd Desktop/Code/Shell
AMIGA:amiga~/Desktop/Code/Shell> bash --version
GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin18)
Copyright (C) 2007 Free Software Foundation, Inc.
AMIGA:amiga~/Desktop/Code/Shell> ./abcde.sh
a a a 
a a b 
a a c 
a a d 
a a e 
a b a 
a b b 
a b c 
. . .
e d d 
e d e 
e e a 
e e b 
e e c 
e e d 
e e e 
AMIGA:amiga~/Desktop/Code/Shell> _

This User Gave Thanks to wisecracker For This Post:
nezabudka
 

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bashbug-64

BASHBUG(1)						      General Commands Manual							BASHBUG(1)

NAME

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SYNOPSIS

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DESCRIPTION

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SEE ALSO

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AUTHORS

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