Sponsored Content
Full Discussion: error in if statement
Operating Systems Linux error in if statement Post 302194139 by era on Monday 12th of May 2008 09:54:57 AM
Old 05-12-2008
It would really help to see what the output is supposed to be, and what you are currently getting.

As an aside, you have multiple occurrences of an anti-pattern known as Useless Use of Cat, and also Useless Use of Grep and Useless Use of Test $?.

cat file | grep anything can always be rephrased as grep anything file as long as a single file is involved.

grep anything | awk '{ print $something }' can basically always be rephrased as awk '/anything/ { print $something }' (use the awk tolower() function on the search string to ignore case).

grep something; if [ $? -eq 0 ] ... can fruitfully be simplified to simply if grep something ...

This is not to pick on you (maybe pick a little bit on jim who ought to know better :-) -- rather an attempt at helping you make your scripts more idiomatic and readable.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

parsing error in if statement

hello, I am trying to parse an error returned by a command inside the if statement but it is just displays the full error instead and then stops. if ; then echo "no such package" else echo "similar version found will use pkgrm" fi the above code just displays please let me know... (2 Replies)
Discussion started by: rakeshou
2 Replies

2. Shell Programming and Scripting

Error with if statement..Please help

:b:hi, I have a script as given below: pr_det="1" if then awk ' BEGIN {printf("%23s","session")}' >> report.txt awk ' BEGIN {printf "\n"} ' >> report.txt else awk ' BEGIN {printf("%55s","file_dsc")} ' >> report.txt awk ' BEGIN {printf("%101s","no_recs")} '... (1 Reply)
Discussion started by: jisha
1 Replies

3. Shell Programming and Scripting

Snytax error on If Statement--help

year=`date '+%Y'` month=`date '+%m'` day=`date '+%d'` day=`expr $day - 1` case $month in 1 | 3 | 5 | 7 | 8 | 10 | 12);; if($day =7 ); then $day=6 fi 4 | 6 | 9 | 11);; if ; then $day=31 fi 2);; if ; then if ; then (2 Replies)
Discussion started by: dannyd_y
2 Replies

4. Shell Programming and Scripting

Error in IF statement

HI i am getting error while executing the given statement for filename in `cat a/file.lst` do if then echo "Exit Code Description :File $filename - is missing in Input Directory" >a.log exit else count1=`awk 'END {print NR}' $filename` echo "$count1">>a.log count2=`awk 'END {print... (4 Replies)
Discussion started by: ravi214u
4 Replies

5. Shell Programming and Scripting

error in insert statement

hi, When i try to run the code below, i get the following error "ksh: syntax error: `(' unexpected" i am not able to figure it out. Can anyone help me? Code: (2 Replies)
Discussion started by: ragavhere
2 Replies

6. UNIX for Dummies Questions & Answers

error in if statement

Hi, This is my script to catch any oracle errors. In this, the $sqlerr returns ORA-01017: invalid username/password; logon denied when i specify wrong username/password the if condition is failing. how can i resolve the issue. the if statement gives error sqloutput=`sqlplus -s -L... (1 Reply)
Discussion started by: Swapna173
1 Replies

7. Shell Programming and Scripting

Error in if statement

I am working on script for stale nfs. the file consists of cat data01stale.log - - - - /abcd/backup - - - - /abcd/data Script (16 Replies)
Discussion started by: nareshkumar522
16 Replies

8. Shell Programming and Scripting

If statement Syntax error

Hi Can you please tell me what is wrong with this line: if && ]; then basically i want to check if x = 12 and F (Filename) end with 'g'. But it is throwing syntax error. (7 Replies)
Discussion started by: rtagarra
7 Replies

9. Shell Programming and Scripting

Awk/if statement error

Can anybody tell the correct way to use the following awk pattern check within an if statement? When I run this command outside of the if statement cat /tmp/test2.out | awk -v T=$TIME -v G=$GROUP -v C=$CDATE '$0 ~ T && $0 ~ G && $0 ~ C' | grep -i "Starting the group" I get the following... (0 Replies)
Discussion started by: kieranfoley
0 Replies

10. UNIX for Beginners Questions & Answers

Error code with if statement

hello all im new to unix and when i use below script i get an error : #! /bin/bash Echo -e "enter the name of the file : \c" read file_name if then echo "$file_name found" else echo "$file_name not found" fi running the script i get below error : $ ./hello (26 Replies)
Discussion started by: Ibrahims1
26 Replies
DB2_NUM_ROWS(3) 							 1							   DB2_NUM_ROWS(3)

db2_num_rows - Returns the number of rows affected by an SQL statement

SYNOPSIS
int db2_num_rows (resource $stmt) DESCRIPTION
Returns the number of rows deleted, inserted, or updated by an SQL statement. To determine the number of rows that will be returned by a SELECT statement, issue SELECT COUNT(*) with the same predicates as your intended SELECT statement and retrieve the value. If your application logic checks the number of rows returned by a SELECT statement and branches if the number of rows is 0, consider modi- fying your application to attempt to return the first row with one of db2_fetch_assoc(3), db2_fetch_both(3), db2_fetch_array(3), or db2_fetch_row(3), and branch if the fetch function returns FALSE. Note If you issue a SELECT statement using a scrollable cursor, db2_num_rows(3) returns the number of rows returned by the SELECT state- ment. However, the overhead associated with scrollable cursors significantly degrades the performance of your application, so if this is the only reason you are considering using scrollable cursors, you should use a forward-only cursor and either call SELECT COUNT(*) or rely on the boolean return value of the fetch functions to achieve the equivalent functionality with much better perfor- mance. PARAMETERS
o $stmt - A valid stmt resource containing a result set. RETURN VALUES
Returns the number of rows affected by the last SQL statement issued by the specified statement handle. PHP Documentation Group DB2_NUM_ROWS(3)
All times are GMT -4. The time now is 08:47 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy