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,
How can I check for a field in a pipe-delimited file having a NULL value in Unix using a grep command or any other command.
Please reply (5 Replies)
hii..
I have a pipe delimited file
For ex:
TEST_1-8J6TZN|ASLANK|BHR-09||TRAM
I want to grep for NULL in the 4th field only from the above file
Please suggest
Also let me know if there is any limitation in the suggested command
Thanks all in advance..!! (5 Replies)
I have a huge file with 20 fileds in each record and each field is seperated by "|". If i want to get all the reocrds that have 18th or for that matter any filed as null how can i do it? Please let me know (3 Replies)
Hello Gurus,
I need to create a file from a .csv file extracting specific columns only.
File structure is
Column1,Column2,Column3,Column4
abcd,1234,"asdf, tew,123",123456
efgh,234,asdf,654321
My output file should have
abcd,123456
efgh,654321
Can you pls help me with the code.
... (10 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)
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)