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Full Discussion: To print diamond asterisk pattern based on inputs
Top Forums Shell Programming and Scripting To print diamond asterisk pattern based on inputs Post 303037601 by wisecracker on Wednesday 7th of August 2019 01:58:04 PM
Old 08-07-2019
Fully dash/POSIX shell only compliant.
Uses terminal escape codes for fun.
Code:
#!/usr/local/bin/dash
# DIAMOND.sh
# POSIX compliant, with no input error checking.
# Using terminal escape codes just for fun.

echo "Enter minimum value:"
read -r MIN
echo "Enter maximum value:"
read -r MAX
printf "\033c\n"
STRNG="* "
COUNT=1
STAR="${STRNG}"
HORIZ=34
VERT=4
while [ ${COUNT} -lt ${MIN} ]
do
    STRNG="${STRNG}"'* '
    COUNT=$(( COUNT + 1 ))
done

STAR="${STRNG}"
COUNT=$(( MAX + 1 ))
while [ ${COUNT} -ge ${MIN} ]
do
    printf "%b" "\033["${VERT}";"${HORIZ}"f${STAR}"
    STAR="${STAR}${STRNG}"
    COUNT=$(( COUNT - 1 ))
    HORIZ=$(( HORIZ - MIN ))
    VERT=$(( VERT + 1 ))
done
HORIZ=34
VERT=$(( VERT + MAX - MIN ))
STAR="${STRNG}"
COUNT=$(( MAX + 1 ))
while [ ${COUNT} -ge ${MIN} ]
do
    printf "%b" "\033["${VERT}";"${HORIZ}"f${STAR}"
    STAR="${STAR}${STRNG}"
    COUNT=$(( COUNT - 1 ))
    HORIZ=$(( HORIZ - MIN ))
    VERT=$(( VERT - 1 ))
done
printf "\033[H"

Result OSX 10.14.3, default bash terminal calling dash, values given, 3 MIN, 10 MAX:
Code:
AMIGA:amiga~/Desktop/Code/Shell> 


                                 * * * 
                              * * * * * * 
                           * * * * * * * * * 
                        * * * * * * * * * * * * 
                     * * * * * * * * * * * * * * * 
                  * * * * * * * * * * * * * * * * * * 
               * * * * * * * * * * * * * * * * * * * * * 
            * * * * * * * * * * * * * * * * * * * * * * * * 
         * * * * * * * * * * * * * * * * * * * * * * * * * * * 
            * * * * * * * * * * * * * * * * * * * * * * * * 
               * * * * * * * * * * * * * * * * * * * * * 
                  * * * * * * * * * * * * * * * * * * 
                     * * * * * * * * * * * * * * * 
                        * * * * * * * * * * * * 
                           * * * * * * * * * 
                              * * * * * * 
                                 * * *

 

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LEARN ABOUT REDHAT

ngettext

NGETTEXT(1)								GNU							       NGETTEXT(1)

NAME

       ngettext - translate message and choose plural form

SYNOPSIS

       ngettext [OPTION] [TEXTDOMAIN] MSGID MSGID-PLURAL COUNT

DESCRIPTION

       The  ngettext  program  translates a natural language message into the user's language, by looking up the translation in a message catalog,
       and chooses the appropriate plural form, which depends on the number COUNT and the language of the message catalog  where  the  translation
       was found.

       Display native language translation of a textual message whose grammatical form depends on a number.

       -d, --domain=TEXTDOMAIN
	      retrieve translated message from TEXTDOMAIN

       -e     enable expansion of some escape sequences

       -E     (ignored for compatibility)

       -h, --help
	      display this help and exit

       -V, --version
	      display version information and exit

       [TEXTDOMAIN]
	      retrieve translated message from TEXTDOMAIN

       MSGID MSGID-PLURAL
	      translate MSGID (singular) / MSGID-PLURAL (plural)

       COUNT  choose singular/plural form based on this value

       If the TEXTDOMAIN parameter is not given, the domain is determined from the environment variable TEXTDOMAIN.  If the message catalog is not
       found in the regular directory, another location can be specified with the environment variable TEXTDOMAINDIR.  Standard search	directory:
       /usr/share/locale

AUTHOR

       Written by Ulrich Drepper.

REPORTING BUGS

       Report bugs to <bug-gnu-gettext@gnu.org>.

COPYRIGHT

       Copyright (C) 1995-1997, 2000, 2001 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       The full documentation for ngettext is maintained as a Texinfo manual.  If the info and ngettext programs are properly  installed  at  your
       site, the command

	      info ngettext

       should give you access to the complete manual.

GNU gettext 0.11						  September 2001						       NGETTEXT(1)
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