Hi,
I have a log file which is constantly being written to by some process. I need to clear that log file on a daily basis.
The problem is that when I issue this command:
echo "" > logfile.log
the file gets filled with nulls thus increasing the size of the file.
Is there a way to... (2 Replies)
Hi All,
I have a table with 10 columns. Some columns(2nd,4th,5th,7th,8th and 10th) are Not Null columns. I'll get a tab-delimited file and want to check col by col and generate seperate error code for each col eg:102 if 2nd col value is NULL and 104 if 4th col value is NULL so on... I am a... (7 Replies)
Hi,
Can someone help me comparing Null values.
Scenario is as follows:
I have a variable which "cache_prd" which can have either some integer or nothing(Null)
if it is integer I have to again do some comparision but these comparisons give me this error:( "line 32: [: 95: unary operator... (3 Replies)
Hi,
I am trying to find the lines in a pipe delimited file where 11th column has not null values. Any help is appreciated. Need help asap please.
thanks in advance. (3 Replies)
Hi All ,
below is my shell program.
!/bin/sh
set -x
#----------------------------------------------------------------------------------------
# Program : weekly_remove_icd_file.sh
# Author :
# Date : 04/06/2013
# Purpose : Execute the script to... (3 Replies)
Hi,
I've a pipe delimited file and wanted to replace the 3rd field to 099990 where the values are null. How can I achieve it using awk or sed.
20130516|00000061|02210|111554|03710|2|205069|SM APPL $80-100 RTL|S
20130516|00000061|02210|111554|03710|2|205069|SM APPL $80-100 RTL|S... (12 Replies)
I have 3 files, data file,schema file and a threshold file.
Data file contains data in which columns are distributed according to schema file. This data file doesn't contain any headers.
Three continuous columns in the data file represent single variable in schema file.
first column represent... (1 Reply)
Hi Folks,
We have a file that has null values but there are no delimiters. So all columns are considered as a single column.
Ex:
abc def 123
abcdef1234567
hijklmn7896545
Now from "a" till "3" all are considered as a single column from the first row.
Our requirement is like, we... (2 Replies)
The below code runs and creates an output file with three sections. The first 2 sections are ok, but the third section doesn't seem to put a . in all the fields that are blank. I don't know if this is what causes the last two fields in the current output to shift to a newline, but I can not seem... (3 Replies)
I have the following a.txt file
A|1|2|3|4|5|
A||2|3|0||
A|1|6||8|10|
A|9|2|3|4|1|
A|0|9|3|4|5|
A||2|3|4|5|
A|0|av|.9|4|9|
I use the following command to count null values for 2nd field
awk -F"|" '!$2 { N++; next } END {print N}' a.txt
It should give the result 2, but it is giving... (2 Replies)
Discussion started by: RJG
2 Replies
LEARN ABOUT DEBIAN
adt-virt-null
adt-virt-null(1) Linux Programmer's Manual adt-virt-null(1)NAME
adt-virt-null - autopkgtest null virtualisation server
SYNOPSYS
adt-virt-null [options]
DESCRIPTION
adt-virt-null provides a dummy autopkgtest virtualisation server which does not actually offer any kind of separation between host and
testbed.
Normally adt-virt-null will be invoked by adt-run.
There is of course no locking; nothing prevents multiple simultaneous programs from invoking adt-virt-null so as to reuse the same system
as a testbed.
OPTIONS -d | --debug
Enables debugging output. Probably not hugely interesting.
INPUT, OUTPUT AND EXIT STATUS
The behaviour of adt-virt-null is as described by the AutomatedTesting virtualisation regime specification.
SEE ALSO adt-run(1), adt-virt-chroot(1), adt-virt-xenlvm(1), /usr/share/doc/autopkgtest/.
AUTHORS AND COPYRIGHT
This manpage is part of autopkgtest, a tool for testing Debian binary packages. autopkgtest is Copyright (C) 2006-2007 Canonical Ltd and
others.
See /usr/share/doc/autopkgtest/CREDITS for the list of contributors and full copying conditions.
autopkgtest 2007 adt-virt-null(1)