Line Number Question 2

[lambros]

Hi,

Given the line number in a file; how is it possible to return the line?

L.

 

[vgersh99]

to get a SECOND line:

sed -n '2p' fileName.txt vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[vgersh99]

from

http://www.student.northpark.edu/pemente/sed/sed1line.txt

# print line number 52
sed -n '52p' # method 1
sed '52!d' # method 2
sed '52q;d' # method 3, efficient on large files vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[tdatgod]

My favorite if you want line 52 is....

head -52 file | tail -1

However if the file is only 50 lines long it will display the 50th line.

 

[jamisar]

the best approach: vlad's 1.method -----------
when they don't ask you anymore, where they are come from, and they don't tell you anymore, where they go ... you'r getting older !

 

[lambros]

Hi,

Just one more question;

for(ind in termsARR){
system(&quot;sed -n 'indp' log&quot
}

How can I do this? I'm trying to get the number from the array & assigning it to ind & using Vlads command from there.

 

[vgersh99]

# assuming this is part of an awk script:
#
for(ind in termsARR){
cmd=&quot;sed -n '&quot; ind &quot;p' log&quot;;
# system(cmd);
# OR
# cmd | getline myLine;
}
vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[lambros]

Vlad,

Thanks for all your help & quick responses, I'd have been some time figuring that out on my own.

L.