Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Grep first n lines from each file Post 303046256 by vgersh99 on Tuesday 28th of April 2020 10:05:08 AM
Old 04-28-2020
man head
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Grep multiple lines from a file

Hi, I would like to ask if there is any method to grep a chuck of lines based on the latest file in a directory. E.g Latest file in the directory: Line 1: 532243 Line 2: 123456 Line 3: 334566 Line 4: 44567545 I wanted to grep all the line after line 2 i.e. Line 3 and line 4 and... (5 Replies)
Discussion started by: dwgi32
5 Replies

2. Shell Programming and Scripting

grep and display lines from a file

I have to grep on a few words in a file and then display the line containing those words and the line above it. For ex - File1.txt contains... abc xyz abc This is a test Test successful abc xyz abc Just a test Test successful I find the words 'Test successful' in the file... (6 Replies)
Discussion started by: user7617
6 Replies

3. Shell Programming and Scripting

grep two lines in a file

Hi Everyone, I have 1.txt 1 6-6 3-3 word y f 6-6 word 5-5 4 5-5 word The output should be: 3-3 (8 Replies)
Discussion started by: jimmy_y
8 Replies

4. Shell Programming and Scripting

Grep between block of lines in a file

Hi Friends, I have a file which has many of the statements like below ******** MAKING > noun1 < cg_all statements statements statements ********* MAKING > noun2 < cg_all statements statements statements ********* MAKING > noun3 < all statements statements statements I would... (3 Replies)
Discussion started by: ganga.dharan
3 Replies

5. Shell Programming and Scripting

Extracting specific lines of data from a file and related lines of data based on a grep value range?

Hi, I have one file, say file 1, that has data like below where 19900107 is the date, 19900107 12 144 129 0.7380047 19900108 12 168 129 0.3149017 19900109 12 192 129 3.2766666E-02 ... (3 Replies)
Discussion started by: Wynner
3 Replies

6. UNIX for Dummies Questions & Answers

grep two lines from a file

Sample File abc xyz def abc ggh abc xyz I just created a sample file above to show what I need. I need to grep two lines. e.g abc and xyz(only if they are one after the other) so output would be abc xyz abc xyz (note abc followed by ggh line would not come out in the output). I... (9 Replies)
Discussion started by: ran123
9 Replies

7. UNIX for Dummies Questions & Answers

grep lines in a file that have only one field

Hello. How does one grep lines in a file that have only one field? AAA BBB CCC DDD AAA CCC Is is possible to grep "DDD" becuase it has only one field? Thanks. ---------- Post updated at 08:03 PM ---------- Previous update was at 07:25 PM ---------- I found it, thank you! awk 'NF... (2 Replies)
Discussion started by: jimmyf
2 Replies

8. Shell Programming and Scripting

Grep 3 lines from a file

I have file, test.txt UtranCellId MDN407WI1 administrativeState 1 (UNLOCKED) aseDlAdm 500 aseUlAdm 800 cellReserved 1 (NOT_RESERVED) dlCodeAdm ... (6 Replies)
Discussion started by: radius
6 Replies

9. Shell Programming and Scripting

Grep into a file + show following lines

Hi guys, This is probably very easy but I've no idea how to pull this out. Basically, I need to find errors into a very large logfile. When you grep the ID, the output is like this: +- Type: 799911 Code: Ret: 22728954 Mand: X Def: Des: UserDes: SeqNo: 2 +- Type: 799911 Code: Ret:... (5 Replies)
Discussion started by: Arkadia
5 Replies

10. Shell Programming and Scripting

Grep the lines in one file that are also in another

Hi all, I have two files. File A looks like this: abkhasian com|hum accent com|com|com|com|sta acceptation act|com|sta adventures com|hum adversity com|hum|hum and File B looks like this: adventure adventures adversary Adverse adversity I want to print those lines in File A... (9 Replies)
Discussion started by: owwow14
9 Replies
head(1) 						      General Commands Manual							   head(1)

NAME
head - Displays the beginning of files SYNOPSIS
Current Syntax head [-c bytes] [-n lines] [file...] Obsolescent Syntax head [-lines] [file...] STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: head: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
The default count is 10. [Tru64 UNIX] Specifies the number of bytes to display. If the last byte written is not a newline character, a newline character is appended to the output. Specifies the number of lines to display Works exactly as -n lines. Obsolescent. OPERANDS
Path name of the input file. If you do not specify a file, head reads standard input. DESCRIPTION
The head command copies the standard input to standard output, ending output of each file at the specified point. NOTES
The obsolescent form is subject to withdrawal at any time. EXIT STATUS
The following exit values are returned: Successful completion. An error occurred. EXAMPLES
To display the first 5 lines of a file called test, enter: head -n 5 test To display the first ten lines of all files (except those with a name beginning with a period), enter: head * ENVIRONMENT VARIABLES
The following environment variables affect the execution of head: Provides a default value for the internationalization variables that are unset or null. If LANG is unset or null, the corresponding value from the default locale is used. If any of the internationalization vari- ables contain an invalid setting, the utility behaves as if none of the variables had been defined. If set to a non-empty string value, overrides the values of all the other internationalization variables. Determines the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as opposed to multibyte characters in arguments and input files). Determines the locale for the format and contents of diagnostic messages written to standard error. Determines the location of message catalogues for the processing of LC_MESSAGES. SEE ALSO
Commands: cat(1), more(1), pg(1), sed(1), tail(1) Standards: standards(5) head(1)
All times are GMT -4. The time now is 10:24 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy