|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
Null values after emptying a log file
Post 56652 by S.P.Prasad on Thursday 7th of October 2004 09:36:12 AM
10-07-2004
|
|
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
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)
Discussion started by: dsravan
3 Replies
2. Shell Programming and Scripting
Hi All,
I have a table with 10 columns. Some columns(2nd,4th,5th,7th,8th and 10th) are Not Null columns. I'll get a tab-delimited file and want to check col by col and generate seperate error code for each col eg:102 if 2nd col value is NULL and 104 if 4th col value is NULL so on... I am a... (7 Replies)
Discussion started by: Mandab
7 Replies
3. UNIX for Dummies Questions & Answers
Hi
I tried to empty an existing file (bring the size of the file down to 0). When I used “> myFile” or “cat </dev/null >myFile”, when I do a “ls –la”, the file size shows as 0.
I then wrote 540 lines to the file, and then opened it using vi, I see something like this:
"myFile" 540 lines,... (3 Replies)
Discussion started by: qmqmqm
3 Replies
4. Shell Programming and Scripting
Hi Friends
I am new to sed programming , i found that the below code can search for the $ToSearch and Replace it with $ToReplace ( $ToSearch and $ToReplace are my variables in my script )
sed "s/$ToSearch/$ToReplace/" $file > $output
mv $output $file
In testing the script i found that... (3 Replies)
Discussion started by: rakeshkumar
3 Replies
5. Shell Programming and Scripting
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)
Discussion started by: manikms
3 Replies
6. Shell Programming and Scripting
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)
Discussion started by: krupasindhu18
3 Replies
7. Shell Programming and Scripting
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)
Discussion started by: rudoraj
12 Replies
8. Shell Programming and Scripting
Hi Folks,
We have a file that has null values but there are no delimiters. So all columns are considered as a single column.
Ex:
abc def 123
abcdef1234567
hijklmn7896545
Now from "a" till "3" all are considered as a single column from the first row.
Our requirement is like, we... (2 Replies)
Discussion started by: jayadanabalan
2 Replies
9. Shell Programming and Scripting
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)
Discussion started by: cmccabe
3 Replies
10. Shell Programming and Scripting
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)
Discussion started by: RJG
2 Replies
LEARN ABOUT OSF1
log
log(8) System Manager's Manual log(8) NAME
log - Records input and output from a program SYNOPSIS
/usr/sbin/log <logfile> <command> OPERANDS
The file in which to record the interaction being logged. The command to execute. DESCRIPTION
The log program runs <command> and logs the input to and output from <command> to the <logfile> file. Input and output are logged until <command> exits, the log program exits, and the exit status of <command> is returned. The log program is used by the system installation procedure and the it(8) command to create the /var/adm/smlogs/install.log and /var/adm/smlogs/it.log installation log files. RESTRICTIONS
Because the log program is used in the installation standalone environment, program size was the greatest concern in its implementation. The log program does not search for the PATH variable to locate <command> and error messages are terse. The log program causes <command> to take standard input from and write standard output and standard error to UNIX pipes. Some commands will not be able to operate in this environment; therefore, it is suggested that you use the script(1) command instead. UNIX shells will not issue prompts when run from log unless the shell is started with an explicit interactive switch (-i for most shells). For example, log foo.tmp /sbin/sh -i In the previous example, foo.tmp is the name of <logfile>. The log program intercepts end-of-file (usually Ctrl/d). Therefore programs which normally receive end-of-file as an exit command must exit by some other means. ERRORS
Log open error Explanation: The log program was unable to open <logfile>. Verify that the directory exists and that ownerships and permissions are set correctly. Exec Error Explanation: The log program was unable to execute <command>. Verify that you specified a full pathname for <command> and that <command> is an exe- cutable file. Fork Error Explanation: The log program was unable to create one of the processes it requires to log data. SEE ALSO
Commands: it(8), script(1) log(8)