ruby like command line string formatter.

ljust

#!/bin/sh

# 
# ljust
# 
# ruby like command line string formatter.
# 

#
# usage:
#
# ljust [num]
#

function rep() {
    n=$1
    str=$2
    ret=""
    
    i=0
    while [ $i -lt $n ]; do
        ret="$ret$str"
        (( i = $i + 1 ))
    done

    echo "$ret"
}

if [ $# -lt 1 ]; then
    echo "usage: ljust [num]"
    exit 0
fi

REPEATS=$1
PADDING=`rep $REPEATS " "`

while read line ; do
    echo "$PADDING$line"
done