Question

I’m trying to read a file line by line starting from a specific line in bash. I have already used the while command to read each line of the file by incrementing the count. Can I make it start from a specific line?

let count=0
declare -a ARRAY

while read LINE; do
ARRAY[$count]=$LINE 
vech=${ARRAY[$count]}
    if [...blah ..]
     then
    ...blah..
    fi 
sleep 2 
((count++)) 
done < filec.c 

Any kind of help in the form of suggestions or algorithms are welcome.

Edit: I’m trying to pass the line number as a variable . I am Grepping for a specific pattern and if found, should pass the line number starting from the pattern.

Answer 1

I would use sed‘s addresses to start at a particular line number and print to the end of the file:

lineNumber=10
sed -n "$lineNumber"',$p' |
while read line; do
  # do stuff
done

Either that or, as Fredrik suggested, use awk:

lineNumber=10
awk "NR > $lineNumber" |
while read line; do
  # do stuff
done