Block of records to select from a file

Shell Programming and Scripting
1

Hello:

I am new to shell script programming. Now I would like to select specific records block from a file. For example, current file "xyz.txt" is containing 1million records and want to select the block of records from line number 50000 to 100000 and save into a file. Can anyone suggest me how do I write a command in one line?

Thank you.

2

Try this

sed -n '50000,100000 p' file

#sed -n "<startline>,<endline> p" file

regards,
Ahamed

3

Try this

perl -ne 'print if $. >= 50000; exit if $. >= 100000;' xyz.txt>output_file
4 
#!/bin/bash
# bash 4 tested
declare -i num=0
while read -r line
do
    ((num++))
    if (( $num >50000 ));then
        echo "$line"
    fi
    if (( $num == 100001 ));then
        exit
    fi

done <file > output