multiple conditions in if/then


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers multiple conditions in if/then
# 1  
Old 07-21-2006
multiple conditions in if/then

Hello,
I am having trouble with the syntax with a conditional statement in a BASH script involving multiple conditions. Any suggestions would be greatly appreciated!

if [ "$sString" != "2" && "$sString" != "5" && "$sString" !="8
" && "$tString" !="3" && "$tString" != "5" ]; then
array=("${array[@]}" "$dnNum" )
fi
i receive this error:
./testscript: [: missing `]'
# 2  
Old 07-21-2006
Did you really have this on two lines like this?
If so put a \ character right after !="8"
# 3  
Old 07-21-2006
they are infact on the same line, but i did try adding a '\'. I also tried the if statment with only two "conditions".
i.e.
f [ "$sString" != "2" && "$sString" != "5"]; then
array=("${array[@]}" "$dnNum" )
fi
# 4  
Old 07-21-2006
The last example is failing because of your "5" sitting next to the "]" with no whitespace.

Your first example will work if you replace "&&" with "-a" or if you replace your brackets "[" and "]" with double brackets "[[" and "]]".

Example:
Code:
if [ "$sString" != "2" -a "$sString" != "5" ]; then
...
fi

and:
Code:
if [[ "$sString" != "2" && "$sString" != "5" ]]; then
...
fi

# 5  
Old 07-21-2006
Computer

thank you so much...this was the first time i've posted on a forum, and it def proved its usefulness...

Last edited by grandtheftander; 07-21-2006 at 03:20 PM..
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Multiple If conditions

I am analyzing one of the scripts written by another person.script is having multiple if conditions and everything are nested.The code is not formatted properly.Is there any way to identify in Unix to identify begin and end of a particular if block? (6 Replies)
Discussion started by: vamsi.valiveti
6 Replies

2. UNIX for Beginners Questions & Answers

Logic for multiple if conditions.

Hi Gurus, Is there a way we can set a logic for this problem ? The input file looks like below; 1 15 17 2 8 12 3 18 24 4 21 23 5 2 4 6 11 25 So, I would like to print for any row of the input file where the range of value between $2 to $3 lies within the min and max values of Min=10... (2 Replies)
Discussion started by: Indra2011
2 Replies

3. Shell Programming and Scripting

Multiple conditions in IF

Fellas, Am new to unix os/ and here the situation , I am trying to write multiple condition statement inside if but it throws me a error here is my piece of code , if ] && ] && ] then commands fi error : line 15 : ` can someone please advise me how to fix it Please use... (7 Replies)
Discussion started by: xeccc5z
7 Replies

4. UNIX for Dummies Questions & Answers

If + multiple conditions

Hello Unix-Forums! It has been a long time since my last post, but finally I've got a new question: I know in case you can use multiple patterns by case $var in a|b|c|ab) and so on. But how would I place an OR between if ] then ... if ] then ... I want to execute the "..." if... (3 Replies)
Discussion started by: intelinside
3 Replies

5. UNIX for Dummies Questions & Answers

Nested if with multiple conditions

Deal Experts I am working on a script to find a date which is 7 days older and follwoing is my approach #!/bin/sh Yr=`date +"%Y"` Mn=`date +"%m"` Md=28 Da=`date +"%d"` echo $Yr echo $Mn echo $Da var1=$Yr$Mn$Da echo "before" $var1 if expr $Da > 7 then Da=`expr $Da - 7`... (3 Replies)
Discussion started by: sweetnsourabh
3 Replies

6. Shell Programming and Scripting

multiple conditions in 'if clause'

Hi, When i use the below code snippet in my shell script OFC_10.sh: if then echo "Success" exit 2 elif then echo "Failure" exit 6 I get the error message: ./OFC_10.sh: line 41: ' ./OFC_10.sh: line 45: ' Line 41 is the line where If loop starts and line 45 is... (2 Replies)
Discussion started by: shrutihardas
2 Replies

7. Shell Programming and Scripting

specifying multiple conditions in AWK

how can i specify more than 1 consition in the following AWK statament?? i.e. if $2 is ABCD and $3 is MNOP and $4 is KLPM similarly for OR #!/bin/ksh awk -F '' ' $2 == "ABCD" { print $2, $3;}' file.xml (2 Replies)
Discussion started by: skyineyes
2 Replies

8. Shell Programming and Scripting

Help regarding multiple conditions

Hi All, I am new to shell scripting. Can any one say what is wrong in this if statement, that uses multiple conditions if then *************** else if ( -z $pcs && "$night_time_calc" > "$night_time" ) then ******************************** ... (4 Replies)
Discussion started by: ssenthilkumar
4 Replies

9. Shell Programming and Scripting

multiple if conditions

Guys, Im trying to have a script that evaluates multiple conditions : test.sh: if then echo "host $1" else if then echo "host $1" else echo $1 not valid exit 1 fi when I do ./test.sh brazil1 I get: (4 Replies)
Discussion started by: bashshadow1979
4 Replies

10. Shell Programming and Scripting

multiple conditions in if statements

Hi all, I'm confused about the proper syntax for multi-conditional if then statements. I'm trying to set limitations on info input on the command line.. i.e. if ] ;then $x=$vr1 else print "You have entered an invalid option." Can someone please clue me in on what is wrong with my syntax;... (3 Replies)
Discussion started by: tim mauger
3 Replies
Login or Register to Ask a Question