Counting the max length of string


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Counting the max length of string
# 1  
Old 02-23-2007
Counting the max length of string

Hi all,

I have a flat file of 1000 rows. I want to check the length of the 5th column. The one having the longest length , I want to set it as DEFINED PARAMETER.
So later I can check others with that particular number only.

Any ideas ??
# 2  
Old 02-23-2007
Code:
awk ' length($5) > len { len=length($5) } END { print len } ' file

# 3  
Old 02-23-2007
thanks anbu
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

How do you preserve the max length of a line after replacing a specific value?

I'm new with scripting and I can't seem to figure out what I should do to get the output that I want. My file content would be below. ID2|ID3 |ID4|ID5 | I'm trying to replace the field of ID3 which has a fixed length of 10 characters, for each entry I have placed on a .txt file... (5 Replies)
Discussion started by: asdfghjkl
5 Replies

2. Shell Programming and Scripting

Find max length of the field and then replace zero

hai guys, pick the 1st field and calculate max length. if suppose max length is 2, then compare the all records if <2 then add zero's prefix of the record. for ex: s.no,sname 1,djud 37,jtuhe in this max length of the 1st field is 2 right the output wil be s.no,sname 01,djud... (6 Replies)
Discussion started by: Suneelbabu.etl
6 Replies

3. Shell Programming and Scripting

Filter (by max length) only lines not matching regex

I have a large file of many pairs of sequences and their headers, which always begin with '>' I'm looking for help on how to retain only sequences (and their headers) below a certain length. So if min length was 10, output would be I can filter by length, but I'm not sure how to exclude... (3 Replies)
Discussion started by: pathunkathunk
3 Replies

4. Shell Programming and Scripting

Aligning text files by max field length

Hello, Is there anyway that I can align a pipe delimited text file by the maxium field length where the field is separated out by pipes for large text files with more than 100,000 rows? So, far I have searched other forums and google about aligning text files in unix and I have noticed that... (7 Replies)
Discussion started by: physalis2099
7 Replies

5. UNIX for Dummies Questions & Answers

Modify the max username length

Hey Any one... Do u know any way I can modify the max username length in unix? I guess it is 32/64 characters by default. Suppose I want to increase it to 128. i hav tried /etc/skel but no use... How can I do that? (2 Replies)
Discussion started by: MayureshRisbud
2 Replies

6. UNIX for Advanced & Expert Users

How to increase max username length?

Hi, This is my first post to this site. So kindly forgive if I am writing in a wrong section. My query is that... I want to modify the max username length size. I guess it is 32/64 on CentOS. Now I want to change it to 128. Is there any way to do that? Thanks in advance!! :) (4 Replies)
Discussion started by: ajay303
4 Replies

7. Programming

key_t type max length or boundaries value

Hello, In shared memory, when using shmget function, first parameter is ket_t key. I know it is an integer type, but length of it is system dependent. That means may not be have integer's ranges. What is range of key_t in Linux? Is it different in distros, for example in ubuntu & fedora? (2 Replies)
Discussion started by: pronetin
2 Replies

8. UNIX for Dummies Questions & Answers

Read file and remove max length

Hi all, I tried to write a shell to read huge file and eliminate max length record which is wrong generated record. But I get an error remove_sp.sh: line 27: syntax error near unexpected token `else' remove_sp.sh: line 27: ` else $LINE >> REJFILE' My shell is here: #!/bin/sh... (5 Replies)
Discussion started by: mr_bold
5 Replies

9. Shell Programming and Scripting

what is the max length of args i can pass in shell?

i have a shell script which takes several args. what is the maximum length of string i can give as argument? (6 Replies)
Discussion started by: senthilk615
6 Replies

10. UNIX for Dummies Questions & Answers

Length of a Unix filepath max length

Hi Guys, Could anyone shed some light on the length of a Unix filepath max length pls ? thanks ! Wilson (3 Replies)
Discussion started by: wilsontan
3 Replies
Login or Register to Ask a Question