11-27-2008
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi! I have a large set of pairs of text files (each pair in their own subdirectory) and each pair shares head/tail (a couple of first and last lines) but differs in the middle part. I need to delete the heads/tails and keep only the middle portions in which they differ. The lengths of heads/tails... (1 Reply)
Discussion started by: dobryden
1 Replies
2. Shell Programming and Scripting
Hi,
I have a server, which has more than of 1000 ip address, but only 500 ip address are responding in the Server. Here below the error message received while restarting the named
Sep 22 00:25:00 ns2 named: creating IPv4 interface eth0:595 failed;
interface ignored
Sep 22 00:25:00 ns2... (5 Replies)
Discussion started by: gsiva
5 Replies
3. Shell Programming and Scripting
I have a log file that is about 1.2 million lines long and about 300MB.
we need a way to clean up this file and only keep the last few thousand lines.
if i use tail command we run our of memory as the file is too big.
I do have a key word to match on.
example, we want to keep every line... (8 Replies)
Discussion started by: robsonde
8 Replies
4. Shell Programming and Scripting
input
-200 2.4
0 2.6
30 2.8
output
-500 0
-499 0
-488 0
..........
..........
....
-200 2.4
....
...
0 2.6 (6 Replies)
Discussion started by: quincyjones
6 Replies
5. UNIX for Dummies Questions & Answers
Assume that the text file contains over 40 lines. How do you do this?!?!? (5 Replies)
Discussion started by: phunkypants
5 Replies
6. UNIX for Dummies Questions & Answers
hay i need to display middle line:
1
2
3
4
5
how can i display 3-4? (6 Replies)
Discussion started by: margan_ron
6 Replies
7. Shell Programming and Scripting
I have 250 files that have 16 columns each - all numbered as follows stat.1000, stat.1001, stat.1002, stat.1003....stat.1250.
I would like to join all 250 of them together tail by tail as follows. For example
stat.1000
a b c
d e f
stat.1001
g h i
j k l
So that my output... (2 Replies)
Discussion started by: kayak
2 Replies
8. Shell Programming and Scripting
Hi All,
I want to write a script which first check the line counts of a file if its more than 500 it deletes rest except the last 500..
I tried sed but it looks sed counts line numbers from the head & not from tail.. May be I need a wc -l frist then apply if statement & pass on the line count... (17 Replies)
Discussion started by: ailnilanjan
17 Replies
9. Shell Programming and Scripting
Hello,
I need to tail -f a file output stream and I need to get only lines that contains "get" and "point" in the same line. It doesn't matter the order.
Then I need only the text BEFORE "point".
I have to count each line and perform other serveral actions after this has performed 3 times.... (9 Replies)
Discussion started by: Kibou
9 Replies
ntptime(1) General Commands Manual ntptime(1)
NAME
ntptime - read kernel time variables
SYNOPSIS
ntptime [ -chr ] [ -e est_error ] [ -f frequency ] [ -m max_error ] [ -o offset ] [ -s status ] [ -t time_constant ]
DESCRIPTION
This program is useful only with special kernels described in theA Kernel Model for Precision Timekeepingpage. It reads and displays time-
related kernel variables using the ntp_gettime() system call. A similar display can be obtained using the ntpdc program and kerninfo com-
mand.
OPTIONS
-c Display the execution time of ntptime itself.
-e est_error Specify estimated error, in microseconds.
-f frequency Specify frequency offset, in parts per million.
-h Display help information.
-m max_error Specify max possible errors, in microseconds.
-o offset Specify clock offset, in microseconds.
-r Display Unix and NTP times in raw format.
-s status Specify clock status. Better know what you are doing.
-t time_constant Specify time constant, an integer in the range 0-10.
SEE ALSO
More documentation is available in the package ntp-doc.
AUTHOR
David L. Mills <mills@udel.edu>
ntp 4.1.1b-r5 ntptime(1)