Sponsored Content
Top Forums Shell Programming and Scripting sed or awk grep, that will only get the line with more characters. Post 303037998 by MadeInGermany on Tuesday 20th of August 2019 01:01:36 PM
Old 08-20-2019
Print the longest line in the file?
awk:
Code:
awk '{ x=length } x>max { max=x; save=$0 } END { print save }' file

shell built-ins:
Code:
max=0; while read line; do x=${#line}; if [ $x -gt $max ]; then max=$x; save=$line; fi; done < file; echo "$save"

sed: would be (too) complicated.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed remove last 10 characters of a line start from 3rd line

hello experts, I need a sed command that remove last 10 characters of a line start from 3rd line. any suggestions? Thanks you (7 Replies)
Discussion started by: minifish
7 Replies

2. Shell Programming and Scripting

How to call last 14 characters with grep/sed in shell script.

Hi. This is my first post on the forums. I am trying to write a script that will parse a folder of files "oneverylongfilenamexyz.pdf" and create a .dat file named "oneverylongfilenamexyz.dat" with the first line of each .dat file saying variable="xyz" where xyz is the last 14 characters of $i... (4 Replies)
Discussion started by: attonbitusira
4 Replies

3. UNIX Desktop Questions & Answers

grep lines with two specific characters somewhere in the line

I'm having trouble with extracting certain lines from a file based on whether they have all the required fields. Original file: snt:594:Sam N This bpt:2342:Bob P That lr:123 wrp:23:Whoever Person cor:794 Desired output: snt:594:Sam N This bpt:2342:Bob P That wrp:23:Whoever Person ... (3 Replies)
Discussion started by: Chthonic
3 Replies

4. UNIX for Dummies Questions & Answers

Escaping non-readable characters using grep, sed or awk

I'm trying to parse out DNS logs from dozens of different domain controllers over a large period of time. The logs are rolled up into individual text files by size, which may contain only a portion of a day's activity or several day's worth (depending on amount of activity). I'm splitting them by... (4 Replies)
Discussion started by: seanwpaul
4 Replies

5. Shell Programming and Scripting

Problems with Sed/awk/grep and line endings

Hello I have created the following script, which is designed to manipulate a text document: #!/bin/sh # Get 3 lines, (last of which is "Quantity"); adjust order; put all three on one line with tabs. FILENAME=~/Desktop/email.txt LIST=$(grep -B2 "Quantity" ${FILENAME} |awk 'BEGIN { FS = "\n"; RS... (6 Replies)
Discussion started by: benwiggy
6 Replies

6. Shell Programming and Scripting

grep or sed. How to remove certain characters

Here is my problem. I have a list of phone numbers that I want to use only the last 4 digits as PINs for something I am working on. I have all the numbers in a file but now I want to be removed all items EXCEPT the last 4 digits. I have seen sed commands and some grep commands but I am... (10 Replies)
Discussion started by: Sucio
10 Replies

7. Shell Programming and Scripting

SED equivalent for grep -w -f with pattern having special characters

I'm looking for SED equivalent for grep -w -f. All I want is to search a list of patterns from a file. Also If the pattern doesn't match I do not want "null returned", rather I would prefer some text as place holder say "BLANK LINE" as I intend to process the output file based on line number. ... (1 Reply)
Discussion started by: novice_man
1 Replies

8. UNIX for Dummies Questions & Answers

Bash: using SED, trying to replace some characters except first or last line

Hi, I require to replace 2 items: 1. replace start of all lines in a file with ' except the first line 2. replace end of all lines in a file with '||chr( except last line I am able to do the entire file using sed -e s/^/\'/g -e s/$/\'\|\|chr\(/g "$file" > newfile.txt but am not yet... (3 Replies)
Discussion started by: Chella15
3 Replies

9. Shell Programming and Scripting

Use less pipe for grep or awk sed to print the line not include xx yy zz

cat file |grep -v "xx" | grep -v "yy" |grep -v "zz" (3 Replies)
Discussion started by: yanglei_fage
3 Replies

10. Shell Programming and Scripting

awk or sed or grep filter a line and/or between strings

Hi, I have multiple files on a directory with the following content: blahblah blahblah hostname server1 blahblah blahblah ---BEGIN--- aaa bbb ccc ddd ---END--- blahblah blahblah blahblah I would like to filter all the files with awk or sed or something else so I can get below... (6 Replies)
Discussion started by: bayupw
6 Replies
MAX(3)									 1								    MAX(3)

max - Find highest value

SYNOPSIS
mixed max (array $values) DESCRIPTION
mixed max (mixed $value1, mixed $value2, [mixed $...]) If the first and only parameter is an array, max(3) returns the highest value in that array. If at least two parameters are provided, max(3) returns the biggest of these values. Note Values of different types will be compared using the standard comparison rules. For instance, a non-numeric string will be com- pared to an integer as though it were 0, but multiple string values will be compared alphanumerically. The actual value returned will be of the original type with no conversion applied. PARAMETERS
o $values - An array containing the values. o $value1 - Any comparable value. o $value2 - Any comparable value. o $... - Any comparable value. RETURN VALUES
max(3) returns the parameter value considered "highest" according to standard comparisons. If multiple values of different types evaluate as equal (e.g. 0 and 'abc') the first provided to the function will be returned. EXAMPLES
Example #1 Example uses of max(3) <?php echo max(2, 3, 1, 6, 7); // 7 echo max(array(2, 4, 5)); // 5 // The string 'hello' when compared to an int is treated as 0 // Since the two values are equal, the order they are provided determines the result echo max(0, 'hello'); // 0 echo max('hello', 0); // hello // Here we are comparing -1 < 0, so 'hello' is the highest value echo max('hello', -1); // hello // With multiple arrays of different lengths, max returns the longest $val = max(array(2, 2, 2), array(1, 1, 1, 1)); // array(1, 1, 1, 1) // Multiple arrays of the same length are compared from left to right // so in our example: 2 == 2, but 5 > 4 $val = max(array(2, 4, 8), array(2, 5, 1)); // array(2, 5, 1) // If both an array and non-array are given, the array will be returned // as comparisons treat arrays as greater than any other value $val = max('string', array(2, 5, 7), 42); // array(2, 5, 7) // If one argument is NULL or a boolean, it will be compared against // other values using the rule FALSE < TRUE regardless of the other types involved // In the below example, -10 is treated as TRUE in the comparison $val = max(-10, FALSE); // -10 // 0, on the other hand, is treated as FALSE, so is "lower than" TRUE $val = max(0, TRUE); // TRUE ?> SEE ALSO
min(3), count(3). PHP Documentation Group MAX(3)
All times are GMT -4. The time now is 04:14 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy