Could you please try following and let me know if this helps you, I haven't tested it though.
If you need any additional things in code then kindly show us the sample output for same too.
Hi,
I would like to use grep to find files which contain NULL characters. I'm not sure how to represent the null character in the grep statement.
Could anyone help please?
Thanks!
Helen :confused: (5 Replies)
Okay i've got some code which reads a text file and loops through it and there a few if statements inside where one is failing (the one bolded).
Basically the acc column contains a list of three digit access codes, some though have null records (i.e nothing in the field) so what I want to do is... (3 Replies)
Hi All,
I have some csv files out of which i want to find records which have empty values in either the 14th or 16th fields.
The following is a sample.
$cut -d',' -f14,16 SPS* | head -5
VOIP_ORIG_INFO,VOIP_DEST_INFO
sip:445600709315@sip.com,sip:999@sip.com... (2 Replies)
Hi,
i wrote If Conditions in my script, it's returns null and some values.
but i am unable to find when Null value getting. bec we need modification according null vales.
pls help me on this. (2 Replies)
Hi,
I am trying to display the filename in which a string was found after using find and grep. For this after some googling I found that this works:
find -name "*.java" -exec grep "searchStr" {} /dev/null \;
I wanted to know the difference between the above and the following:
find -name... (0 Replies)
Hi,
I've a pipe delimited file where I want to find out a number of lines where 1st 2nd and last field are null using awk/sed. Is it possible?
Thanks (5 Replies)
Hi, everyone
I have a requirement as following:
source file
1, abc, def, caaa
2, , cde, aaa
3, bcd, , adefefg
I need find columns which contains null value, in above example,
I need get two rows
2, , cde, aaa
3, bcd, , adefefg
anybody has idea how to achive this
... (5 Replies)
Hello All,
My apologies if a similar question has already been posted. I searched for "grep", "egrep" and "null"
I'm having an issue with egrep and an extended regular expression.
I'm doing a test for a job name. I would like to have the user enter a job name with no spaces and also test to... (7 Replies)
hi Gurus,
I need find the null column in a file.
my file like below
abc, ,cde,def
abc,ded,cdd,def
abc, ,ddd,ccd
aaa,bbb,ccc,ddd
basic, I need to find the lines which second column is null
Thanks in advance (3 Replies)
Hi Team,
I have a file abc.dat which is a empty file. But it has null record in first line. I need to identify this unique file and handle it separately.
scenario 1:
abc/dw> wc abc.dat
1 0 1 abc.dat
abc/dw> cat abc.dat
abc/dw>
scenario 2:
abc/dw> wc pqr.dat
0 0 0 pqr.dat... (3 Replies)
Discussion started by: kmanivan82
3 Replies
LEARN ABOUT OSX
null
null(n) null(n)
__________________________________________________________________________________________________________________________________________________NAME
null - Create and manipulate null channels
SYNOPSIS
package require Tcl
package require memchan
null
_________________________________________________________________DESCRIPTION
The command described here is only available in a not-yet released version of the package. Use the CVS to get the sources.
null creates a null channel which absorbs everything written into it. Reading from it is not possible, or rather will always return zero
bytes. These channels are essentially Tcl-specific variants of the null device for unixoid operating systems (/dev/null). Transfer-
ing the generated channel between interpreters is possible but does not make much sense.
OPTIONS
Memory channels created by null provide one additional option to set or query.
-delay ?milliseconds?
A null channel is always writable and readable. This means that all fileevent-handlers will fire continuously. To avoid starvation
of other event sources the events raised by this channel type have a configurable delay. This option is set in milliseconds and
defaults to 5.
A null channel is always writable and never readable. This means that a writable fileevent-handler will fire continuously and a readable
fileevent-handler never at all. The exception to the latter is only the destruction of the channel which will cause the delivery of an eof
event to a readable handler.
SEE ALSO
fifo, fifo2, memchan, random, zero
KEYWORDS
channel, i/o, in-memory channel, null
COPYRIGHT
Copyright (c) 1996-2003 Andreas Kupries <andreas_kupries@users.sourceforge.net>
Memory channels 2.2 null(n)