Nested loop code Post: 302591698

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Top Forums UNIX for Dummies Questions & Answers Nested loop code Post 302591698 by vbe on Friday 20th of January 2012 11:01:14 AM

01-20-2012

Moderator

demo:

Code:

with nestedloop:
i=1
j=1
k=8
for i in {1..$k}
do
  echo "i is "$i
  for j in {1..8}
  do
       echo "j is "$j
       sleep 1
  done
done
~
n12:/home/vbe $ bash nestedloop
i is {1..8}
j is 1
j is 2
j is 3
j is 4
j is 5
j is 6
j is 7
j is 8

nestedloop:
i=1
j=1
k=8
for i in {1..8}
do
  echo "i is "$i
  for j in {1..$i}
  do
       echo "j is "$j
       sleep 1
  done
done
n12:/home/vbe $ bash nestedloop
i is 1
j is {1..1}
i is 2
j is {1..2}
i is 3
j is {1..3}
i is 4
j is {1..4}
i is 5
j is {1..5}
i is 6
j is {1..6}
i is 7
j is {1..7}
i is 8
j is {1..8}

and nestedloop:
i=1
j=1
k=8
for i in {1..8}
do
  echo "i is "$i
  for j in {1..6}
  do
       echo "j is "$j
       sleep 1
  done
done
n12:/home/vbe $ bash nestedloop
i is 1
j is 1
j is 2
j is 3
j is 4
j is 5
j is 6
i is 2
j is 1
j is 2
j is 3
j is 4
j is 5
j is 6
i is 3
j is 1
j is 2
j is 3
j is 4
j is 5
j is 6
i is 4
j is 1
j is 2
j is 3
j is 4
j is 5
j is 6
i is 5
j is 1
j is 2
j is 3
j is 4
j is 5
j is 6
i is 6
j is 1
j is 2
j is 3
j is 4
j is 5
j is 6
i is 7
j is 1
j is 2
j is 3
j is 4
j is 5
j is 6
i is 8
j is 1
j is 2
j is 3
j is 4
j is 5
j is 6

forgot to show with ksh:

Code:

12:/home/vbe $ ksh nestedloop 
i is {1..8}
j is {1..6}

Last edited by vbe; 01-20-2012 at 12:24 PM..

vbe

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LEARN ABOUT OPENSOLARIS

noecho

echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME

       echo, noecho - enable/disable terminal echo

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include  -L	/usr/xpg4/lib 
	-R  /usr/xpg4/lib  -lcurses  [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int echo(void);

       int noecho(void);

DESCRIPTION

       The  echo()  function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
       curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control  soft-
       ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.

RETURN VALUES

       Upon successful completion, these functions return OK. Otherwise, they return ERR.

ERRORS

       No errors are defined.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)

SunOS 5.11							    5 Jun 2002							    echo(3XCURSES)