03-03-2010
deleting lines from file
We have a server that logs transactions to a file. I want to write a script that will delete the first 50 lines of the file daily without renameing the file or moving the file.
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1. Shell Programming and Scripting
Is there an easy way to delete the first so many lines in a log file?
like I have a log file that has 10000 lines, i want to just get rid of the first 9000. (2 Replies)
Discussion started by: BG_JrAdmin
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2. Shell Programming and Scripting
Hi
I have a file & always I need to remove or delete last 2 lines from that file. So in a file if I have 10 lines then it should return me first 8 lines.
Can someone help me? (4 Replies)
Discussion started by: videsh77
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3. Shell Programming and Scripting
How do I delete all the lines after the line containing text ***DISCLOSURES*** . I want to delete this line too.
Thank you (2 Replies)
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4. UNIX for Dummies Questions & Answers
I have a file with 65 sets of 35 coordinates, and would like to isolate these coordinates so that I can easily copy the coordinates to another file. The problem is, I've got a 9 line header before each set of coordinates (so each set is 44 lines long). There are a zillion threads out there about... (3 Replies)
Discussion started by: red baron
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5. Shell Programming and Scripting
HI
I'm looking to delete lines ending with .tk from below data file
---------
abc.tk
mgm.tk
dtk
mgmstk
------
I have written below code
----
sed '/.tk *$/d' dat_file.txt > temp.txt
----
But its deleting all the lines ending with tk. I need to delete only the lines ending .tk
my... (5 Replies)
Discussion started by: shekhar_v4
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6. UNIX for Advanced & Expert Users
How I can delete 100 lines anywhere in a file without opening a file and without renaming the file. (11 Replies)
Discussion started by: Nirgude07
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7. Shell Programming and Scripting
Good morning!!! Im a newbie with shell programing and i was wondering if there is a way to delete certain new lines from a file, here is an example of my current file:
>seq_0
GTGAGATTGCTAATGAGCTGCTTTTAGGGGGCGTGTTGTGCTTGCTTTCC
AACTTTTCTAGATTGATTCTACGCTGCCTCCAGCAGCCACCCCTCCCATC... (11 Replies)
Discussion started by: machalita
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8. Shell Programming and Scripting
Hi,
I have a big (2.7 GB) text file. Each lines has '|' saperator to saperate each columns.
I want to delete those lines which has text like '|0|0|0|0|0'
I tried:
sed '/|0|0|0|0|0/d' test.txt
Unfortunately, it scans the file but does nothing.
file content sample:... (4 Replies)
Discussion started by: dipeshvshah
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9. Shell Programming and Scripting
Hello,
I have a file filled with dates, such as:
04-08-2011 message
04-08-2011 message
03-08-2011 message
01-08-2011 message
31-07-2011 message
24-07-2011 message
15-07-2011 message
13-12-2008 message
26-11-2007 message
And I want to delete those lines whose date is older than 10... (5 Replies)
Discussion started by: asanchez
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10. Shell Programming and Scripting
Hi Guys ,
I have two files say a1 and a2 having following contents
a1
dag
wfd
a2
dag
wfd
chire
hcm
I want to delete only the lines in a2 which are in a1 and final output of a2 should be
a2
chire
hcm (6 Replies)
Discussion started by: Pradeep_1990
6 Replies
LEARN ABOUT HPUX
scanlogs
SCANLOGS(8) System Manager's Manual SCANLOGS(8)
NAME
scanlogs - summarize INN log files.
SYNOPSIS
scanlogs [ norotate ] [ nonn ]
DESCRIPTION
Scanlogs summarizes the information recorded in the INN log files (see newslog(5)). By default, it also rotates and cleans out the logs.
It is normally invoked by the news.daily(8) script.
KEYWORDS
The following keywords are accepted:
norotate
Using this keyword disables the rotating and cleaning aspect of the log processing: the logs files are only scanned for information
and no contents are altered.
nonn Normally the nn log file is scanned and rotated. Using this keyword disables this function.
If scanlogs is invoked more than once a day, the ``norotate'' keyword should be used to prevent premature log cleaning.
HISTORY
Written by Landon Curt Noll <chongo@toad.com> and Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.1, dated 1996/10/29.
SEE ALSO
innd(8) newslog(5), news.daily(8), nnrpd(8).
SCANLOGS(8)