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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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Alzabo::SQLMaker::PostgreSQL(3pm)			User Contributed Perl Documentation			 Alzabo::SQLMaker::PostgreSQL(3pm)

NAME
Alzabo::SQLMaker::PostgreSQL - Alzabo SQL making class for PostgreSQL SYNOPSIS
use Alzabo::SQLMaker; my $sql = Alzabo::SQLMaker->new( sql => 'PostgreSQL' ); DESCRIPTION
PostgreSQL-specific SQL creation. METHODS
Almost all of the functionality inherited from "Alzabo::SQLMaker" as is. The only overridden methods are "limit()" and "get_limit()", as PostgreSQL does allow for a "LIMIT" clause in its SQL. EXPORTED SQL FUNCTIONS
SQL may be imported by name or by tags. They take arguments as documented in the PostgreSQL documentation (version 3.23.39). The func- tions (organized by tag) are: :math PI RANDOM ABD CEIL DEGREES FLOOR FACTORIAL SQRT CBRT EXP LN RADIANS ACOS ASIN ATAN ATAN2 COS COT SIN TAN ROUND TRUNC LOG POW MOD TO_CHAR :string LENGTH CHAR_LENGTH CHARACTER_LENGTh OCTET_LENGTH TIRM UPPER LOWER INITCAP ASCII TO_ASCII STRPOS POSITION TO_NUMBER TO_DATE TO_TIMESTAMP REPEAT RPAD LPAD SUBSTR :datetime NOW CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP TIMEOFDAY ISFINIT TIMESTAMP TO_CHAR DATE_PART DATE_TRUNC EXTRACT OVERLAPS :network BROADCAST HOST NETMASK MASKLEN NETWORK TEXT ABBREV :aggregate These are functions which operate on an aggregate set of values all at once. COUNT AVG MIN MAX SUM STDDEV VARIANCE :system These are functions which return information about the Postgres server. CURRENT_USER SYSTEM_USER USER :control These are flow control functions: NULLIF COALESCE :misc These are functions which don't fit into any other categories. ENCRYPT ENCODE DECODE FORMAT INET_NTOA INET_ATON BIT_OR BIT_AND PASSWORD MD5 LOAD_FILE :common These are functions from other groups that are most commonly used. NOW COUNT AVG MIN MAX SUM DISTINCT AUTHOR
Dave Rolsky, <dave@urth.org> perl v5.8.8 2007-12-23 Alzabo::SQLMaker::PostgreSQL(3pm)
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