sh syntax memorandom

sh_syntax.sh

#!/bin/sh

MY_NAME=$0;
BASE_NAME=${0##*/};
DIR_NAME=${0%/*};
DIRDIR_NAME=${0%/*/*};
DEF_NAME=${_HIDDEN_NAME:-default}               
               
echo $BASE_NAME;
echo $DIR_NAME;
echo $DIRDIR_NAME;
echo $DEF_NAME;
echo pid = $$

LVAL=1;
RVAL=2;

func()
{
    echo list is $*
    for x in $*; do
        echo param $x;
    done

    echo quated is $@
    for x in $@ ; do
        echo quated param $x;
    done

    return 10;
}

#for shs in `find . `; do
#    echo $shs;
#done

if [ -e $0 -a $2 -le $3 ]; then
    echo hello
elif [ -r $BASE_NAME ]; then
    echo readable
fi

if [ -d $DIR_NAME ]; then
    echo $DIR_NAME is directory;
fi

if [ -f $BASE_NAME ]; then
    echo $BASE_NAME is file;
fi

if [ ! -x $BASE_NAME ]; then
    echo $BASE_NAME is not executable;
fi

if [ -w $BASE_NAME ]; then
    echo $BASE_NAME is writable;
fi

case $1 in 
    hello)
        func casehello;
        ;;
    foobar)
        func casefoobar;
        ;;
    foo|bar)
        func case foo or "bar";
        ;;
    *)
        func casedefault;
        ;;
esac

echo func result = $?

TESTVAL=0
while [ $TESTVAL -lt 10 ]; do
    TESTVAL=$((TESTVAL + 1));
    echo $TESTVAL;
done

for_each_cliche()
{ 
# get configuration path at the first operand and use the rest as a command and options
    conf=$1; shift;

# ignore comment lines and use line buffer to read up each set up
    egrep -v '^#' $conf |
        while read name edev eoff ecnt wdev wskip wopt; do
# $@ contains commands, and given parameters give full set of operation
            "$@" $name $edev $eoff $ecnt $wdev $wskip $wopt || fatal_err;
    done
}

echo "type name>"
read name;
echo "name is $name"

echo waiting for SIGINT

trap 'echo trapped SIGINT' 2

sleep 10

to keep me remind bourne shell syntax