How to compare null and space using single if condition Post: 302195864

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

compare null with non-null

I've got a very peculiar situation. I'm trying to find out if we can compare null fields with non-null. I've output csv files from SQL and Oracle. I need to compare each field from the files, and then find out any differences. The files usualy have over 500 fields, and send the resule to DBA....

2. Shell Programming and Scripting

How can find Null value in If condition

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.

3. Shell Programming and Scripting

Cannot replace null with space

I have a fixed width text file which has some null characters in no particular order. I need to replace them with spaces so that the width remains same. I tried this: tr "\000" "\040" < mainfile > newfile Does not work. I tested that it works the other way round: $ echo "hello" |tr...

4. UNIX for Advanced & Expert Users

How to Compare Null values??

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...

5. Shell Programming and Scripting

Stripping out more than a space from a line, but keep single space.

Hi all, Is there a way to perform the above, I am trying to strip out more than one space from a line, but keep the single space. See below output example. My Name is test test2 test3 test4 test5 My Name is test test2 test3 test4 test5 Please note that the lines would contain...

6. Shell Programming and Scripting

NULL in between, at begining or at end of line - convert to space

How to replace null with space? I want to make each line with 80 characters. If any line contains only 5 characters and remaining is null, then i want to make it as 80 characrets where 5 is original characters and remaining 75 characters will be null.. NULL can come in between the line,...

7. Shell Programming and Scripting

How to compare 2 file with Condition.

Hello, I need to run a command or shell script that will compare 2 file with Condition. Can you please help ? thank you. File 1. ############start@linda22 ... ################## aaaaaaa bbbbbbb cccccc dddddd eeeee 11111 ############start@linda23 ... ################## aaaaaaa...

8. Shell Programming and Scripting

Checking for null condition in a UNIX variable

i have this code for i in `cat sql_output.txt` do -- some script commands done sql_output.txt has 1 column with employee_ids If the sql_output.txt is null then the do loop should not execute. How can i implement this. for i in `cat sql_output.txt` If i is null or empty then ...

9. Shell Programming and Scripting

If condition to check null variable

Guys, Please help me on the below sample.cfg var=NULL sample.sh #!/bin/sh . /sample.cfg if ;then 1 st command here else 2 nd command here fi

10. UNIX for Dummies Questions & Answers

To flat file, append null or space if its length is less than 10

Hi, We receive flat files with fixed width data Now our goal is append from right null or space to each record if the lenght of the record is less than for example 10. for example 123 45 6 0 123 45 123 45 6 123 and output should be 123 45 6 0 123 45**** 123 45 6**...

LEARN ABOUT DEBIAN

dahdi_test

dahdi_test(8)						      System Manager's Manual						     dahdi_test(8)

NAME

       dahdi_test -- Test if the DAHDI timer provides timely response

SYNOPSIS

       dahdi_test [ -v ]

DESCRIPTION

       dahdi_test dahdi_test runs a timing test in a loop and prints the result of each loop.  The test is as follows:

       It  reads  8192 bytes from the DAHDI timer device (/dev/dahdi/pseudo).  This should take exactly 8000 ms . It uses calls to gettimeofday(2)
       before and after that read to check that indeed exactly 8000ms have passed.

       Values of 100% and 99.99% Are normally considered a definite pass.  Values of 99.98% and 99.97% are probably OK as well.

OPTIONS

       -v
	      Be more verbose: print one line per test.

       -c count
	      Run for count times instead of running forever.

FILES

       /dev/dahdi/pseudo
       The device file used to access the DAHDI timer.

SEE ALSO

       dahdi_tool(8), dahdi_cfg(8), asterisk(8). gettimeofday(2)

AUTHOR

       This manual page was written by Tzafrir Cohen <tzafrir.cohen@xorcom.com> Permission is granted to copy, distribute and/or modify this docu-
       ment under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation.

								    2005-06-25							     dahdi_test(8)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

compare null with non-null

Discussion started by: nitin

2. Shell Programming and Scripting

How can find Null value in If condition

Discussion started by: koti_rama

3. Shell Programming and Scripting

Cannot replace null with space

Discussion started by: rikxik

4. UNIX for Advanced & Expert Users

How to Compare Null values??

Discussion started by: Yagami