Visit The New, Modern Unix Linux Community


sed or awk grep, that will only get the line with more characters.


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting sed or awk grep, that will only get the line with more characters.
# 1  
sed or awk grep, that will only get the line with more characters.

Is there a command for sed and awk that will only sort the line with more characters?

Code:
#cat file
123
12345
12
asdgjljhhho
bac
ss

Output:
asdgjljhhho


#cat file2
11.2
12345.00
21.222
12345678.10

Output:
12345678.10

--- Post updated at 12:40 AM ---

Closing this now. I figured it out.
Thanks
# 2  
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.
# 3  
Code:
sed -n "/.\\{$(wc -L < file)\\}/{p;q}" file
grep -m 1 ".\\{$(wc -L < file)\\}" file
awk 'length==l {print;exit}' l=$(wc -L < file) file


Last edited by rdrtx1; 02-18-2020 at 08:28 PM..

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #529
Difficulty: Medium
256 possible ASCII characters are enough to represent the wide array of international characters when we consider languages like Chinese Japanese Korean (CJK).
True or False?

10 More Discussions You Might Find Interesting

1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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

Featured Tech Videos