compare null with non-null Post: 302095005

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Null Value

Hello All, I have a file of the format **** 123 abc ABC 456 bcd BCD 789 def 112 ghi GHI 223 jkl 344 mno MNO **** I am trying to extract the lines that have no values in the third field (in this case, this would be 789 def 223 jkl Can anyone please help??...

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> /dev/null

hello all, In many shell scripts i found '> /dev/null' , i am not able to get this, will any one please explain why we are using this. thanks sudha

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How to compare null and space using single if condition

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/dev/null

Hi expert, May I know what is the difference between below cron tab entry ? 0,12 * * * * /abc/myscript.sh > /dev/null 2>&1 0,12 * * * * /abc/myscript.sh

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/dev/null what is the use of it?

when do you use the path /dev/null

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How to Compare Null values??

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I have an input file having 7 fields delimited by , eg : 1,ABC,hg,1,2,34,3 2,hj,YU,2,3,4, 3,JU,kl,4,5,7, 4,JK,KJ,3,56,4,5 The seventh field here in some lines is empty, whereas the other lines there is a value. How do I insert string NULL at this location (7th loc) for these lines where...

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/dev/null 2>&1 Versus /dev/null 2>1

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Check for null

Hi Champs!!! im a newbie in unix, need ur expert help for my problem... I need to search if there are any "NULL" entries in the string String without Null Str1: 203652|1000003653|tellt|RUPV|4649|1|07/28/2011 01:56:12 String with Null (RUPV is removed) Str2:...

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Redirecting standard out to /dev/null goes to file "/dev/null" instead

I apologize if this question has been answered else where or is too elementary. I ran across a KSH script (long unimportant story) that does this: if ; then CAS_SRC_LOG="/var/log/cas_src.log 2>&1" else CAS_SRC_LOG="/dev/null 2>&1" fithen does this: /usr/bin/echo "heartbeat:...

LEARN ABOUT OSX

slapd-null

SLAPD-NULL(5)							File Formats Manual						     SLAPD-NULL(5)

NAME

       slapd-null - Null backend to slapd

SYNOPSIS

       /etc/openldap/slapd.conf

DESCRIPTION

       The Null backend to slapd(8) is surely the most useful part of slapd:
       - Searches return success but no entries.
       - Compares return compareFalse.
       - Updates return success (unless readonly is on) but do nothing.
       - Binds other than as the rootdn fail unless the database option "bind on" is given.
       - The slapadd(8) and slapcat(8) tools are equally exciting.
       Inspired by the /dev/null device.

CONFIGURATION

       This slapd.conf option applies to the NULL backend database.  That is, it must follow a "database null" line and come before any subsequent
       "database" lines.  Other database options are described in the slapd.conf(5) manual page.

       bind <on/off>
	      Allow binds as any DN in this backend's suffix, with any password.  The default is "off".

EXAMPLE

       Here is a possible slapd.conf extract using the Null backend:

	      database null
	      suffix   "cn=Nothing"
	      bind     on

ACCESS CONTROL

       The null backend does not honor any of the access control semantics described in slapd.access(5).

FILES

       /etc/openldap/slapd.conf
	      default slapd configuration file

SEE ALSO

       slapd.conf(5), slapd(8), slapadd(8), slapcat(8).

OpenLDAP 2.4.28 						    2011/11/24							     SLAPD-NULL(5)

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