Shell Programming and Scripting

i=0
t5=6000001
while [ $i -lt 100 ]
do

i=`expr $i + 1`
t5=`expr $t5 + 1`
echo $t5
done

t1=10001
t2=abc
t3=ghkc
t4=cbf
t5=6000001

col1,col2,col3,col4,col5,col6
10001,abc,6000001,,,,,,,
10001,ghkc,6000002,,,,,,,
10001,cbf,6000003,,,,,,,
10002,abc,6000004,,,,,,,
10002,ghkc,6000005,,,,,,,
10002,cbf,6000006,,,,,,,
10003,abc,6000007,,,,,,,
10003,ghkc,6000007,,,,,,,
10003,cbf,6000008,,,,,,,

#/bin/bash
i=0
t1=10001
t234=(abc ghkc cbf)
t5=60000001
while [ $i -lt 100 ]; do
  echo $((t1+i/3)),${t234[$((i%3))]},$((t5+i)),,,
  ((i++))
done

d=6000000;for i in  100{1..3},{abc,ghkc,cbf} ; do printf '%s,%s\n' "$i" $((d++)); done
1001,abc,6000000
1001,ghkc,6000001
1001,cbf,6000002
1002,abc,6000003
1002,ghkc,6000004
1002,cbf,6000005
1003,abc,6000006
1003,ghkc,6000007
1003,cbf,6000008

printf "%s\n" 1000{1..3},{abc,ghkc,cbf},

t1=10001
t2="abc ghkc cbf"
t5=6000001
i=0
while :
do
  for j in $t2
  do
    if [ $((i+=1)) -gt 100 ]; then
      break 2
    fi
    printf "%s,%s,%s,,,,,,,\n" "$t1" "$j" "$t5"
    t5=$(( t5 + 1 ))
  done
  t1=$(( t1 + 1 ))
done