Hi
I want to delete first five and last five lines in text files without opening the file and also i want to keep the same file name for all the files.
Thanks in advance!!!
Ragav (10 Replies)
Hi
I am writing a script which should read a file and search for certain strings 'approved' or 'removed' and retain only those lines that contain the above strings.
Ex: file name 'test'
test:
approved package
waiting for approval package
disapproved package
removed package
approved... (14 Replies)
Input:
a
b
b
c
d
d
I need:
a
c
I know how to get this (the lines that have duplicates) :
b
d
sort file | uniq -d
But i need opossite of this. I have searched the forum and other places as well, but have found solution for everything except this variant of the problem. (3 Replies)
First of all, I know this can be more eassily done with perl or other scripting languages but, that's not the issue. I need this in sed. (or wander if it's possible )
I got a file (trace file to recreate the control file from oracle for the dba boys)
which contains
some lines
another line... (11 Replies)
Hello,
I have a group of text files with many lines in each file.
I need to delete all the lines in each and only leave 2 lines in each file. (3 Replies)
Hi All,
I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space.
I dont know if this works : I want to read each line of the File in a For Loop, and want to... (16 Replies)
hey guys,
I tried searching but most 'search and replace' questions are related to one liners.
Say I have a file to be replaced that has the following:
$ cat testing.txt
TESTING
AAA
BBB
CCC
DDD
EEE
FFF
GGG
HHH
ENDTESTING
This is the input file: (3 Replies)
Hello,
I'm trying to figure out how to use sed or awk to delete single lines in a file. By single, I mean lines that are not touching any other lines (just one line with white space above and below).
Example:
one
two
three
four
five
six
seven
eight
I want it to look like: (6 Replies)
Hi all,
I'm looking for a way (sed or awk) to delete multiple lines between blank lines containing two patterns ex:
user: alpha
parameter_1 = 15
parameter_2 = 1
parameter_3 = 0
user: alpha
parameter_1 = 15
parameter_2 = 1
parameter_3 = 0
user: alpha
parameter_1 = 16... (3 Replies)
Discussion started by: ce9888
3 Replies
LEARN ABOUT REDHAT
prunehistory
PRUNEHISTORY(8) System Manager's Manual PRUNEHISTORY(8)NAME
prunehistory - remove file names from Usenet history file
SYNOPSIS
prunehistory [ -f filename ] [ -p ]
DESCRIPTION
Prunehistory modifies the history(5) text file to ``remove'' a set of filenames from it. The filenames are removed by overwriting them
with spaces, so that the size and position of any following entries does not change.
Prunehistory reads the standard input. The input is taken as a set of lines. Blank lines and lines starting with a number sign (``#'')
are ignored. All other lines are should consist of a Message-ID followed by zero or more filenames.
The Message-ID is used as the dbz(3) key to get an offset into the text file. If no filenames are mentioned on the input line, then all
filenames in the text are ``removed.'' If any filenames are mentioned, they are converted into the history file notation. If they appear
in the line for the specified Message-ID then they are removed.
Since innd(8) only appends to the text file, prunehistory does not need to have any interaction with it.
OPTIONS -p Prunehistory will normally complain about lines that do not follow the correct format. If the ``-p'' flag is used, then the program
will silently print any invalid lines on its standard output. (Blank lines and comment lines are also passed through.) This can be
useful when prunehistory is used as a filter for other programs such as reap.
-f The default name of the history file is <pathdb in inn.conf>/history; to specify a different name, use the ``-f'' flag.
HISTORY
Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.7, dated 1998/04/09.
SEE ALSO dbz(3), history(5), inn.conf(5), innd(8).
PRUNEHISTORY(8)