string to number problem


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting string to number problem
# 1  
Old 09-25-2010
string to number problem

Hi
actually what happen i have taken a value from database table and stored in variable and that value is 20100601 000000 but this value is stored as string value in database table so
after storing this value in variable a when i did operation on this a variable like

a=`expr ${a} +1`
i m getting syntax error .

Can anyone pls help me that how to convert string to number and how to solve this problem

any help will be highly appreciated
thanks
# 2  
Old 09-25-2010
The problem is not that the value was stored as a string value, but that 20100601 000000 is not a number. What would you like the number to be?
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

Python : Problem with " TypeError: float() argument must be a string or a number "

Hello ! I'm creating a CGI which allow to display graph from some data. The datas looks like : 2020-01-13-00-00,384.00,350.00 2020-01-13-06-00,384.00,350.00 2020-01-13-12-00,384.00,350.00 2020-01-13-18-00,384.00,350.00 2020-01-14-00-00,384.00,350.00... (1 Reply)
Discussion started by: Tim2424
1 Replies

2. UNIX for Beginners Questions & Answers

Concatenate a string and number and compare that with another string in awk script

I have below code inside my awk script if ( $0 ~ /SVC IN:/ ) { svc_in=substr( $0,23 , 3); if (msg_start == 1 && msg_end == 0) { msg_arr=$0; } } else if ( $0 ~ /^SVC OUT:/ ) { svc_out=substr( $0, 9, 3); if (msg_start == 1 && msg_end == 0) ... (6 Replies)
Discussion started by: bhagya123
6 Replies

3. Shell Programming and Scripting

Getting number from a string

I have a string c12 and want to get the number 12 In general instead of 12 I can have any number. I have to capture the number as I need to do some computations on it. I am using a bash script (6 Replies)
Discussion started by: kristinu
6 Replies

4. Shell Programming and Scripting

Parsing a long string string problem for procmail

Hi everyone, I am working on fetchmail + procmail to filter mails and I am having problem with parsing a long line in the body of the email. Could anyone help me construct a reg exp for this string below. It needs to match exactly as this string. GetRyt... (4 Replies)
Discussion started by: cwiggler
4 Replies

5. Shell Programming and Scripting

Problem in comparing 2 files string by string

Hi Champs, I am a newbie to unix world, and I am trying to built a script which seems to be far tough to be done alone by me..... " I am having a raw csv file which contains around 50 fields..." From that file I have to grep 2 fields "A" and "B"....field "A" is to be aligned vertically... (11 Replies)
Discussion started by: jitendra.pat04
11 Replies

6. Shell Programming and Scripting

changing number in bash (number is in form of string)

I have a txt file as database. when i run my program what it does is it ask me for 3 name and stored in the file as name1:name2:name3:1 when u enter 3 name it add those in file as above format and add 1 at the end. I what i want is if i enter same names again it changes that 1 to 2 and so... (3 Replies)
Discussion started by: Learnerabc
3 Replies

7. Programming

Problem in getting the correct number from the string.

I have string named texts which consist of section label “BOOK-SEC-“. Section starts from 1 to n, where n is a number. For this example conside the value of n is 9. That is, the string variable looks like “BOOK-SEC-1... (2 Replies)
Discussion started by: SamRoj
2 Replies

8. Shell Programming and Scripting

number of occurences of a string

hi, I have a file where i need to count the occurences of a string ex) 'welcome to unix forum'. can anybody help me out (12 Replies)
Discussion started by: siddu_chittari
12 Replies

9. Shell Programming and Scripting

sed problem - replacement string should be same length as matching string.

Hi guys, I hope you can help me with my problem. I have a text file that contains lines like this: 78 ANGELO -809.05 79 ANGELO2 -5,000.06 I need to find all occurences of amounts that are negative and replace them with x's 78 ANGELO xxxxxxx 79... (4 Replies)
Discussion started by: amangeles
4 Replies

10. Shell Programming and Scripting

string to number

In the following script when I get SIZE1 and SIZE2, they are of type string. I can not do any mathematical operations on them. I wanted to find out if I can convert string in to Number. Thanks in Advance. FILE1='/export/registry/incoming/reg.dmp' FILE2='/export/registry/reg.dmp' SIZE1=`ls... (2 Replies)
Discussion started by: George_king
2 Replies
Login or Register to Ask a Question