Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Print nth line in a file
Top Forums Shell Programming and Scripting Print nth line in a file Post 302883831 by John K on Thursday 16th of January 2014 09:00:03 AM
Old 01-16-2014
Print nth line in a file
Bash/Oracle Linux 6.4

A basic requirement.

How can I get nth line of a file printed ? Can I use grep in this case ?

Example:
In the below file, 12th line is "Kernel parameter check passed for rmem_max" . I just want the 12 line to be printed.

Code:
# cat sometext.txt
Kernel version check passed
Kernel parameter check passed for semmsl
Kernel parameter check passed for semmns
Kernel parameter check passed for semopm
Kernel parameter check passed for semmni
Kernel parameter check passed for shmmax
Kernel parameter check passed for shmmni
Kernel parameter check passed for shmall
Kernel parameter check passed for file-max
Kernel parameter check passed for ip_local_port_range
Kernel parameter check passed for rmem_default
Kernel parameter check passed for rmem_max
Kernel parameter check passed for wmem_default
Kernel parameter check passed for wmem_max
Kernel parameter check passed for aio-max-nr
Package existence check passed for binutils
#

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Print lines with specific character at nth position in a file

I need to print lines with character S at nth position in a file...can someone pl help me with appropriate awk command for this (2 Replies)
Discussion started by: manaswinig
2 Replies

2. Shell Programming and Scripting

Print lines with specific character at nth position in a file

I need to print lines with character S at nth position in a file...can someone pl help me with appropriate awk command for this (1 Reply)
Discussion started by: manaswinig
1 Replies

3. Shell Programming and Scripting

extract nth line of all files and print in output file on separate lines.

Hello UNIX experts, I have 124 text files in a directory. I want to extract the 45678th line of all the files sequentialy by file names. The extracted lines should be printed in the output file on seperate lines. e.g. The input Files are one.txt, two.txt, three.txt, four.txt The cat of four... (1 Reply)
Discussion started by: yogeshkumkar
1 Replies

4. Shell Programming and Scripting

find string nth occurrence in file and print line number

Hi I have requirement to find nth occurrence in a file and capture data from with in lines (between lines) Data in File. <QUOTE> <SESSION> <ATTRIBUTE NAME='Parameter Filename' VALUE='file1.parm'/> <ATTRIBUTE NAME='Service Name' VALUE='None'/> </SESSION> <SESSION> <ATTRIBUTE... (6 Replies)
Discussion started by: tmalik79
6 Replies

5. Shell Programming and Scripting

How to start reading from the nth line till the last line of a file.

Hi, For my reuirement, I have to read a file from the 2nd line till the last line<EOF>. Say, I have a file as test.txt, which as a header record in the first line followed by records in rest of the lines. for i in `cat test.txt` { echo $i } While doing the above loop, I have read... (5 Replies)
Discussion started by: machomaddy
5 Replies

6. Shell Programming and Scripting

Calculating average for every Nth line in the Nth column

Is there an awk script that can easily perform the following operation? I have a data file that is in the format of 1944-12,5.6 1945-01,9.8 1945-02,6.7 1945-03,9.3 1945-04,5.9 1945-05,0.7 1945-06,0.0 1945-07,0.0 1945-08,0.0 1945-09,0.0 1945-10,0.2 1945-11,10.5 1945-12,22.3... (3 Replies)
Discussion started by: ncwxpanther
3 Replies

7. Shell Programming and Scripting

Print every nth line

Dear all, How to print every nth line. File like this: File input: 1 1 1 1 1 1 2 2 2 3 3 3 3 3 3 (3 Replies)
Discussion started by: attila
3 Replies

8. UNIX for Beginners Questions & Answers

Insert a line of text on nth line of a file

Hi All, I am using UNix Sun OS sun4u sparc SUNW,SPARC-Enterprise My intention is to insert a line of text after 13th line of every file inside a particular directory. While trying to do it for a single file , i am using sed sed '3 i this is the 4th line' filename sed: command garbled: 3... (5 Replies)
Discussion started by: gotamp
5 Replies

9. AIX

Print nth previous line after match

Please help me print nth line after match awk or sed one line command. (3 Replies)
Discussion started by: sushma123
3 Replies

10. Shell Programming and Scripting

Printing string from last field of the nth line of file to start (or end) of each line (awk I think)

My file (the output of an experiment) starts off looking like this, _____________________________________________________________ Subjects incorporated to date: 001 Data file started on machine PKSHS260-05CP ********************************************************************** Subject 1,... (9 Replies)
Discussion started by: samonl
9 Replies

LEARN ABOUT SUSE

debugfs_create_bool

DEBUGFS_CREATE_BOOL(9)					      The debugfs filesystem					    DEBUGFS_CREATE_BOOL(9)

NAME

       debugfs_create_bool - create a debugfs file that is used to read and write a boolean value

SYNOPSIS

       struct dentry * debugfs_create_bool(const char * name, mode_t mode, struct dentry * parent, u32 * value);

ARGUMENTS

       name
	   a pointer to a string containing the name of the file to create.

       mode
	   the permission that the file should have

       parent
	   a pointer to the parent dentry for this file. This should be a directory dentry if set. If this parameter is NULL, then the file will
	   be created in the root of the debugfs filesystem.

       value
	   a pointer to the variable that the file should read to and write from.

DESCRIPTION

       This function creates a file in debugfs with the given name that contains the value of the variable value. If the mode variable is so set,
       it can be read from, and written to.

       This function will return a pointer to a dentry if it succeeds. This pointer must be passed to the debugfs_remove function when the file is
       to be removed (no automatic cleanup happens if your module is unloaded, you are responsible here.) If an error occurs, NULL will be
       returned.

       If debugfs is not enabled in the kernel, the value -ENODEV will be returned. It is not wise to check for this value, but rather, check for
       NULL or !NULL instead as to eliminate the need for #ifdef in the calling code.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010						    DEBUGFS_CREATE_BOOL(9)
All times are GMT -4. The time now is 06:27 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy