Shell Programming and Scripting

/usr/xpg6/bin/bc
1 > 2
syntax error on line 1, teletype

if [ $(echo "1.1 == 1.1" | bc) -eq 0 ]; then echo "great"; else echo "no go"; fi
syntax error on line 1, teletype
-bash: [: -eq: unary operator expected
no go

if [ $(echo "if 1.1 == 1.1 0 " | bc) -eq 0 ]; then echo "great"; else echo "no go"; fi

if [ $(echo "if (1.1 == 1.10) 0 " | bc) -eq 0 ]; then echo "great"; else echo "no go"; fi

$ if [ "$(echo "if (1.1 == 1.0) 0 " | bc)" -eq 0 ]; then echo "great"; else echo "no go"; fi
-bash: [: : integer expression expected
no go

$ if [ "$(echo "if (1.1 == 1.10) 0 " | bc)" -eq 0 ] 2>/dev/null; then echo "great"; else echo "no go"; fi
no go

if [ $(printf "%.8f" 1.1) = $(printf "%.8f" 1.10) ]; then echo "great"; else echo "no go"; fi

if [ 1.1 -eq 1.10 ]; then echo "great"; else echo "no go"; fi

a=1.1
b=1.0

if [ $(echo "if ( $a == $b ) 0; if ( $a != $b ) 1 " | bc) -eq 0 ]; then echo "great"; else echo "no go"; fi

a=1.1 b=1.11
if awk "BEGIN{exit! ($a == $b)}" ; then echo "great"; else echo "no go"; fi

if awk "BEGIN{exit! ($a < $b)}" ; then echo "great"; else echo "no go"; fi