Re: counting in "for" loops

[mason@primenet.com.au (Geoff Wing)]

Sven Guckes <guckes@math.fu-berlin.de> typed:
:Again, I look at the manual and  I cannot find
:how to do a simple count within a for loop.
:	$ for count in ???; do
:	> echo -n $count
:	> done
:	1 2 3 4 5 6 7 8 9 10
:What do I need for "???"?
:Why isn't this in the manual as an example?  *sigh*

The manual does list quite a few methods if you read it above and below
the section on for loops.  Most people would have found a method they
like and use it.  It's not as if there aren't a few choices.  For starters:

% count=1; while ( [[ $count -le 10 ]] ); do echo -n $count; let count++; done
% count=1; while ( [[ $count -le 10 ]] ); do echo -n $count; (( count++ )); done
% count=1; while ( [[ count -le 10 ]] ); do echo -n $count; let count++; done
% count=1; while ( [[ count -le 10 ]] ); do echo -n $count; (( count++ )); done
% count=1; while ( [[ $count -le 10 ]] ) { echo -n $count; let count++ }
% count=1; while ( [[ $count -le 10 ]] ) { echo -n $count; (( count++ )) }
% count=1; while ( [[ count -le 10 ]] ) { echo -n $count; let count++ }
% count=1; until ( [[ $count -gt 10 ]] ) { echo -n $count; (( count++ )) }
% count=1; until ( [[ count -gt 10 ]] ); do echo -n $count; let count++; done
% count=1; until ( [[ $count -gt 10 ]] ); do echo -n $count; (( count++ )); done
% count=1; until ( [[ count -gt 10 ]] ) { echo -n $count; let count++ }
% count=1; until ( [[ count -gt 10 ]] ) { echo -n $count; (( count++ )) }
% count=1; repeat 10; do echo -n $count; let count++; done
% count=1; repeat 10; do echo -n $count; (( count++ )); done
% count=1; repeat 10 { echo -n $count; let count++ }
% count=1; repeat 10 { echo -n $count; (( count++ )) }
% for count in {1..10}; do echo -n $count; done
% for count in {1..10}; echo -n $count
zsh-3.1.5% for (( count=1; count <= 10; count++ )); do echo -n $count; done
zsh-3.1.5% for ((count=1; count<=10; count++)) echo -n $count

-- 
Geoff Wing   <gcw@pobox.com>            Mobile : 0412 162 441
Work URL: http://www.primenet.com.au/   Ego URL: http://pobox.com/~gcw/