Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

need help with test condition in shell script

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting need help with test condition in shell script
# 8  
Old 09-11-2006
I think I figured out that the || should actually be && since I need both expresions to be true. But when I change it, I'm getting the following error on that line:

expr: syntax error
[: 20060911112000: unary operator expected
# 9  
Old 09-11-2006
try this
Code:
if [ `expr $timeweb - $timenow` -le $timediff ] && [ `expr $timeweb - $timenow` -ge -$timediff ]

in your previous code the value of this `expr $timenow + $ timediff` exceeds the range and you will get negative number. thats why code gives wrong result
# 10  
Old 09-11-2006
thanks again. I actually had to do the following:

if [ `expr $timeweb - $timenow` -le $timediff ] && [ `expr $timenow- $timeweb` -le -$timediff ]
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

While condition in shell script

while do if ;then read driverName else driverName="" fi done can anyone please explain what exactly is happening on 1st line...is it like the conditions being ORed...I have no clue about this. (4 Replies)
Discussion started by: rtagarra
4 Replies

2. Shell Programming and Scripting

Shell script that check the argument passed to it and prints error if test condition is not met

I want to make a script that check for the argument passed to it and generates an error in case any character/string argument passed to it. I am using below code, but its not working. can anyone help. #!/bin/bash if ]; then echo 'An integer argument is passed to the script hence... (3 Replies)
Discussion started by: mukulverma2408
3 Replies

3. Shell Programming and Scripting

IF condition against a ARRAY in shell script

Hi, I want to check a particular string inserted by User to be checked against the values i already have in a ARRAY string using IF condition. Is this possible? if yes how to do that. example : i have a,b,c,d,e,f values in a array called values i asked user to enter a value: user entered... (2 Replies)
Discussion started by: kukretiabhi13
2 Replies

4. Shell Programming and Scripting

How to check weather a string is like test* or test* ot *test* in if condition

How to check weather a string is like test* or test* ot *test* in if condition (5 Replies)
Discussion started by: johnjerome
5 Replies

5. AIX

if condition in AIX5.3-10 shell script

True if file exists and has been modified since it was last read. if then command else exit fi i am on AIX5.3-10. it does not understand -N any other way. i can use -ot (file1 is older than file2), but prefer -N if possible. (3 Replies)
Discussion started by: tjmannonline
3 Replies

6. Shell Programming and Scripting

Help with shell script to check the condition.

:) Hi, I want to script for this scenerio, OSR Settings Scenario : We are looking to find all the *.a files from the following locations in the filesystem of a server. OSR Directories /etc /bin /usr/bin /usr/sbin /var/adm These *.a files should have the permissions on... (12 Replies)
Discussion started by: sakthilinux
12 Replies

7. Shell Programming and Scripting

test condition

Hi there, I tried to search for this almost everywhere, but didnt get any proper information on it. What is the difference between ] Some of the code works when I have only single condition i.e. ] && $dothis1 || $dothis2 But if i try to include another testcondition to the... (1 Reply)
Discussion started by: tostay2003
1 Replies

8. Shell Programming and Scripting

Test condition

Hello, what is the better and correct way to perform a comparison: I have been using the following with no problems: if ] then .... fi I have seen this also used : if then .... fi When I try : if then .... fi I get an error like .... the test condition expects a... (4 Replies)
Discussion started by: gio001
4 Replies

9. UNIX for Dummies Questions & Answers

Condition test

Hi there, When I try to do a condition on test: $ str1=abcd $ test $str1 $ echo $? 0 Is there anyway to display the answer to be 'TRUE' or 'YES'? rather than 0? If so, how can I do it without using awk or sed. (2 Replies)
Discussion started by: felixwhoals
2 Replies

10. Shell Programming and Scripting

test and if condition

Guys look at this: i have to write a script that takes a file as an argument. The script should be able to determine what permissions the owner, group and everybody has for the file passed in. The output should be displayed similar to this. READ WRITE EXECUTE OWNER LEE.BALLANCORE YES YES NO... (9 Replies)
Discussion started by: ciroredz
9 Replies
Login or Register to Ask a Question