Homework & Coursework Questions

#!/bin/bash
mas=( Andrew John Mike )
for i in ${#mas[@]}
do
  echo "Emelents count ${#mas[@]}"
  echo ${mas[0]}
done

while read -A ARR
do
        echo "${#ARR[@]} elements"
        for STR in "${ARR[@]}"
        do
                ...
        done
done < filename

a
a
a
b
b
b
...

18 e
6 a
8 z
...

strongid@ktl ~ $ pico sav1

   UW PICO(tm) 4.10                             File: sav1                                 Modified

#!/bin/bash
while read -A band (that's my file)
do
  echo "${#band[@]} elements"
  for STR in "${band[@]}
  do
  done
done
done < savas
                                          [ Wrote 9 lines ]

strongid@ktl ~ $ cat band (not empty)
jonas algis andrius
tomas rimas karolis
saulius justas domas

strongid@ktl ~ $ sh sav1 (try to do this script)
sav1: 5: Syntax error: Bad substitution

strongid@ktl ~ $ pico sav1
  
 UW PICO(tm) 4.10                             File: sav1

#!/bin/bash
while read -A ARR
do
    echo "${#ARR[@]} elements"
    for STR in "${ARR[@]}"
    do
    true
    done
done < band

                                           [ Read 9 lines ]

strongid@ktl ~ $ sh sav1
sav1: 5: Syntax error: Bad substitution

#!/bin/bash
while read -a ARR
do
    echo "${#ARR[@]} elements"
    for STR in "${ARR[@]}"
    do
    true
    done
done < band
for ((N=0; N<${#STR}; N++)); do echo "${STR:$N:1}"; done

strongid@ktl ~ $ bash sav1
3 elements
3 elements
3 elements
d
o
m
a
s