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Shell Programming and Scripting

find biggest number inside file

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# 1  
Old 11-11-2012
find biggest number inside file
Hi,

I wanna find the biggest number inside of a file

this is kind of example of file:
Code:
9
11
55

then i just wanna print out the biggest number

i had try sed filenale | sort -k1,1n | paste -s -d',' -
but i had no success ...
Last edited by radoulov; 11-11-2012 at 03:10 PM..
# 2  
Old 11-11-2012
Code:
sort -n filename | tail -1

This User Gave Thanks to Yoda For This Post:
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# 3  
Old 11-11-2012
Code:
awk 'BEGIN {big=$1} {if($1>big) big=$1} END {print big}' input_file

you can use this code to find the biggest number. and here $1 means first field i,e here we are having only one column.
Last edited by radoulov; 11-11-2012 at 03:10 PM.. Reason: Code tags.
# 4  
Old 11-11-2012
also try:
Code:
awk '{$1>b?b=$1:0} END{print b}' infile

# 5  
Old 11-12-2012
Quote:
Originally Posted by rdrtx1
also try:
Code:
awk '{$1>b?b=$1:0} END{print b}' infile

Works well on positive numbers, but would be in trouble if all numbers were negative.
# 6  
Old 11-12-2012
Try like..
Code:
 sort -rn test.txt|head -1

---------- Post updated at 04:29 AM ---------- Previous update was at 04:28 AM ----------

Please post your test data ,i will try...
# 7  
Old 11-12-2012
Code:
perl -e 'biggest = chop(<>);while(<>) { if(chop() > biggest) biggest = chop();} print biggest;'

Hope I'm right.
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