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Shell Programming and Scripting

increment an integer

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# 1  
Old 10-01-2008
increment an integer
hi

I want to echo the variable $i while it auto-increments till 21

I set initially i to 1

any idea how to do that?

thank you
# 2  
Old 10-01-2008
hi melanie,
try the following. hope it will work...
put the code in a script and then excute the script..

count=21
i=1
while [ $i -le $count ]
do
echo $i
i=`expr $i + 1`
done
# 3  
Old 10-01-2008
This is untested, but should work..

Code:
count=21
while [ $count -gt 0 ] 
do
  $i=$(( $lsv + 1 ))
  count=$(( $count - 1 ))
done

# 4  
Old 10-01-2008
Following works for bash and ksh93
Code:
i=0
while (( ++i <= 21 ))
do
     echo $i
done

# 5  
Old 10-01-2008
Code:
bc <<EOF
 for(i=1;i<21;i++){
   print i
   print "\n"
 }
EOF

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