Hello,
Im trying to extract a portion of a big file.
Using unique pattern /occurrence ,
(ex. loginname1,logoff and loginname2,logoff ),
I like to print the lines that contain the patterns and the lines between them.
Also, create a file for every login occurrence.
Thanks for everyone's... (1 Reply)
Hi All,
I have a file of the following format.
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
<role rolename="tomcat"/>
<role rolename="role1"/>
<role rolename="manager"/>
<role rolename="admin"/>
<user username="tomcat" password="tomcat" roles="tomcat"/>
<user... (5 Replies)
Hi all,
I'm new in the unix environment. I'm having a challenge in extracting data from a flat file and convert it to a CSV file format or I should be able to open it with MS Excel.
The input data in my flat file looks like this:
AV00001001155000063637143326711145412082EM SITHOLE... (3 Replies)
Hi All,
I have a requirement where I have to search the file with some text say "Exception". This exception word can be repeated for more then 10 times.
Suppose the "Exception" word is repeated at line numbers say x=10, 50, 60, 120. Now I want to extract all the lines starting from x-5 to... (3 Replies)
Hello everybody,
Here is my problem : I cannot find a way to extract data from a particular file and more precisely I cannot extract the result of my awk script to an external file because I am currently working on HP-UX.
I would like a simple script (without awk) which asks for a date like... (4 Replies)
I need to extract some content of a file.
Example
file abc
vi abc
ooooooooo
bbbbbbbbb
vvv 1234 5
vvv 6789 3
xxxxxxxxxx
xxxxxxxxxx
i want to extract only the following content from file abc and store in another file say temp.
1234 5
6789 3
what should be my approach? (2 Replies)
Hi Freinds,
I have a file1.txt in the following format
File1.txt
I want to get 2 files from the above file filextra.txt should have the lines which are ending with "<" and remaining lines in the filecompare.txt file.
Please help. (3 Replies)
FILE_ID extraction from file name and save it in CSV file after looping through each folders
My files are located in UNIX Server, i want to extract file_id and file_name from each file .and save it in a CSV file. How do I do that?
I have folders in unix environment, directory structure is... (15 Replies)
Hello,
I'm attempting to extract 13 digit numbers beginning with 978 from a data file with the following command:
awk '{ for(i=1;i<=NF;i++) if($i ~ /^978/) print $i; }' datafile > outfile
This typically works. However, the new data file is an .xml file, and this command is no longer working... (6 Replies)
Discussion started by: palex
6 Replies
LEARN ABOUT PLAN9
tail
TAIL(1) General Commands Manual TAIL(1)NAME
tail - deliver the last part of a file
SYNOPSIS
tail [ +-number[lbc][rf] ] [ file ]
tail [ -fr ] [ -n nlines ] [ -c ncharacters ] [ file ]
DESCRIPTION
Tail copies the named file to the standard output beginning at a designated place. If no file is named, the standard input is copied.
Copying begins at position +number measured from the beginning, or -number from the end of the input. Number is counted in lines, 1K
blocks or characters, according to the appended flag or Default is -10l (ten ell).
The further flag causes tail to print lines from the end of the file in reverse order; (follow) causes tail, after printing to the end, to
keep watch and print further data as it appears.
The second syntax is that promulgated by POSIX, where the numbers rather than the options are signed.
EXAMPLES
tail file
Print the last 10 lines of a file.
tail +0f file
Print a file, and continue to watch data accumulate as it grows.
sed 10q file
Print the first 10 lines of a file.
SOURCE
/sys/src/cmd/tail.c
BUGS
Tails relative to the end of the file are treasured up in a buffer, and thus are limited in length.
According to custom, option +number counts lines from 1, and counts blocks and characters from 0.
TAIL(1)