Check for null


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Check for null
# 1  
Old 08-02-2011
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: 203652|1000003653|tellt||4649|1|07/28/2011 01:56:12

I need to return the line if there are any NULL fields in between the PIPE "|" (which is used as delimiter)

Regards,
Guru
# 2  
Old 08-02-2011
Code:
grep '||' YOURFILE

# 3  
Old 08-02-2011
Thanks for the quick reply Yazu,

but, I'm retrieving this line from a file and then i need to check on the prompt.

---------- Post updated at 01:54 PM ---------- Previous update was at 01:33 PM ----------

I still not got the solution !!! Smilie
# 4  
Old 08-02-2011
Quote:
Originally Posted by guruprasad7
Thanks for the quick reply Yazu,

but, I'm retrieving this line from a file and then i need to check on the prompt.

---------- Post updated at 01:54 PM ---------- Previous update was at 01:33 PM ----------

I still not got the solution !!! Smilie
I wonder if this is what you need

PHP Code:
cat YOURFILE grep "||" 
# 5  
Old 08-02-2011
I grep a file and retrieve the line

Str2: 203652|1000003653|tellt||4649|1|07/28/2011 01:56:12

now i need to "|" the current command and check for null... please help!!!
# 6  
Old 08-02-2011
Please post the command to retrieve the above line.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Check null values column

hi, I had a small question.I had a file from which i need to extract data. I have written the below script to check if the file exists and if it exists extract requierd columns from the file. IFILE=/home/home01/Report_1.csv OFILE=/home/home01/name.csv.out1 if #Checks if file exists... (1 Reply)
Discussion started by: Vivekit82
1 Replies

2. 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 (3 Replies)
Discussion started by: AraR87
3 Replies

3. Shell Programming and Scripting

Check null value in xml

Hi, I have a log file which is having some xml tags. I need to check the value for a particular xml field is null or not and if it is null i have to add current time as the value for that xml field. I tried below code to check whether the word count is 0. But even if the xml field is null it... (16 Replies)
Discussion started by: Neethu
16 Replies

4. Shell Programming and Scripting

Check for null values in columns

Hi , I have below data with fixed with of 52 bytes having three columns value data. 01930 MA GLOUCESTER 02033 02025 COHASSET 01960 MA ... (3 Replies)
Discussion started by: sonu_pal
3 Replies

5. Shell Programming and Scripting

check for null

hi, i have 3 lines of output , if second line exists then only condition within the if loop has to exeute other wise it has exit from loop. i had tried like this but not getting please help me ... Code: if ; then echo "success" else echo "" Use code tags please,... (8 Replies)
Discussion started by: sreelu
8 Replies

6. Shell Programming and Scripting

How to check for null value from makefile

My makefile has some code as follows: if ; then \ echo copying tools; \ cp -f `../${TOOLS_ROOT_PATH}/ext_tools.sh 1` ${EXTERNAL_BIN_DIR} || exit $$?;\ fi; \ The ext_tools.sh is as follows: cat ttx.conf | grep external | grep -v ^# | awk '{print $1}' It can sometime result... (1 Reply)
Discussion started by: jake_ryan
1 Replies

7. Shell Programming and Scripting

how to check null variable

korn shell If then update_smartcare_user_password "$u_id" else echo "Not a database user" fi i get this error Syntax error at line *** : `then' is not expected. what should i do. I want to check whether $a is null or not. (2 Replies)
Discussion started by: sachin.gangadha
2 Replies

8. Shell Programming and Scripting

How to check for null or empty string

Hi, I need to check for value not equal (<>) to 21 and not equal empty or null values. Please modify this script if then echo "$VALUE,$BSC_NAME,$BSC_ID" > $OUT_FILE/power_up.out end if TQ (5 Replies)
Discussion started by: doer
5 Replies

9. Shell Programming and Scripting

check for not null string in file

Hi, If, in a text file a string is expected at a certain fixed position(for eg at position 5 or from 5-10 on every line) how to check whether data is present on that position or not? Thnx in advance (6 Replies)
Discussion started by: misenkiser
6 Replies

10. Shell Programming and Scripting

check for NULL variable

Hello I want to check for NULL variable.. but this is not working..please help thanks in advance esham (2 Replies)
Discussion started by: esham
2 Replies
Login or Register to Ask a Question