Display certain line(s) from a text file in Linux.
Purpose:
Display certain line or lines from a text file, such as :
Display the 1000th line from file message.log
or
Display the lines between 1000 and 1020 from file message.log
Solution:
Using sed:
sed -n '1000,1020p' message.log
sed -n '1000,1020p; 1021q' message.log #break after read out 1020th line.
Using awk:
awk '{if ((NR >= 1000) && (NR <= 1020)) print $0}' message.log
Using cat && grep:
cat -n message.log | grep -A 20 '^ *1000'
Using nl && grep:
nl message.log | grep -A 20 '^ *1000'
Using tail && head:
tail -n +1000 message.log | head 20
head -n 1000 message.log | tail +20
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