Sponsored Content
Top Forums Shell Programming and Scripting Bash counter increment not working Post 302903886 by sea on Friday 30th of May 2014 10:11:12 AM
Old 05-30-2014
Code:
#!/bin/bash
var=0
echo $var
((var++))
echo $var

Whats the matter? Smilie
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

counter / increment problem within echo stmt

Simple script trying to increment a counter within an echo statement never gets past 1 - PLEASE HELP! Thanks. ~~~~~~~~~~~ #!/bin/sh stepup() { STEP=`expr $STEP + 1` echo $STEP } # # Initialize variables # STEP=0 echo "Counter Value: `stepup`" echo "Counter Value:... (2 Replies)
Discussion started by: blaze
2 Replies

2. Shell Programming and Scripting

Increment counter in ksh

Hello, I am making an increment counter in ksh. So i write a number in a temporary file and when I execute my script I read this file and I make +1. But how can I make this with a number with 6 digits , example 000009 + 1 = 000010 ... .... .... 000099 + 1 = 000100 Do anyone know... (5 Replies)
Discussion started by: steiner
5 Replies

3. UNIX for Dummies Questions & Answers

bash script to increment a digit in filename

Hi guys, Can someone help me out with this: I have a directory with files like the following, GHost++ 2010-03-14 04-01 DotaCash RD us_ca LC #7 (44m19s).w3g GHost++ 2010-03-14 04-06 DotaCash AP us_ca LC #8 (42m24s).w3g GHost++ 2010-03-14 04-07 DotaCash AR us_ca LC #10 (08m23s).w3g ... (4 Replies)
Discussion started by: hbjlee17
4 Replies

4. Shell Programming and Scripting

loop with a counter on a constant in bash

Hello Everyone, I'm in need of assistance on creating a script with a counter on a certain string. Basically this script opens a log file and displays certain log data. There are two key words in the log. START and FINISH. In between the START and FINISH is a variable ACTNUMBER. It will... (1 Reply)
Discussion started by: rxc23816
1 Replies

5. Shell Programming and Scripting

increment counter as suffix starting with the rightmost digit

Hi, I would like to add a suffix to a file name but maintain the suffix length to 5 digits. For eg, output > 1st_file.00001, 2nd_file.00002...10th_file.00010....100th_file.00100 Can anyone please advise me on how to go about it? Platform: SunOS mps201a 5.9 Generic_118558-39 sun4u... (7 Replies)
Discussion started by: danish0909
7 Replies

6. Shell Programming and Scripting

Increment a variable in unix bash

Hello There, I have been trying to increment the value of variable to 1, 2, 3 etc. but, it displays 1 1+1 1+1+1 ..... :wall: Could anyone help out with this? for i in *.* do s=`expr $s+1` echo $s j=$i$j mv $i $j done Any help is appreciated? (24 Replies)
Discussion started by: amrutha0303
24 Replies

7. Shell Programming and Scripting

Bash 4.0 increment variable

Hi there everyone! This is my first post so be gentle. I have a small bash script that is extracting 3 line every 3 lines. I got the AWK part but i cant do the loop part. #!/bin/bash export line=`awk 'END { print NR }' btnew` echo $line for i in {1..$line..3} #increment do echo... (2 Replies)
Discussion started by: theodorosGreece
2 Replies

8. Shell Programming and Scripting

Comparison of fields then increment a counter reading line by line in a file

Hi, i have a scenario were i should compare a few fields from each line then increment a variable based on that. Example file 989878|8999|Y|0|Y|N|V 989878|8999|Y|0|N|N|V 989878|8999|Y|2344|Y|N|V i have 3 conditions to check and increment a variable on every line condition 1 if ( $3... (4 Replies)
Discussion started by: selvankj
4 Replies

9. Shell Programming and Scripting

Bash menu item counter

We have a simple menu with prompt of menu numbers to user. It is still under construction. Is there a way to "count" the menu choices so the prompt maximum count can be changed dynamically? See attached TODO note in code read_options(){ local choice # the... (7 Replies)
Discussion started by: annacreek
7 Replies
INTVAL(3)								 1								 INTVAL(3)

intval - Get the integer value of a variable

SYNOPSIS
int intval (mixed $var, [int $base = 10]) DESCRIPTION
Returns the integer value of $var, using the specified $base for the conversion (the default is base 10). intval(3) should not be used on objects, as doing so will emit an E_NOTICE level error and return 1. PARAMETERS
o $var - The scalar value being converted to an integer o $base - The base for the conversion Note If $base is 0, the base used is determined by the format of $var: o if string includes a "0x" (or "0X") prefix, the base is taken as 16 (hex); otherwise, o if string starts with "0", the base is taken as 8 (octal); otherwise, o the base is taken as 10 (decimal). RETURN VALUES
The integer value of $var on success, or 0 on failure. Empty arrays return 0, non-empty arrays return 1. The maximum value depends on the system. 32 bit systems have a maximum signed integer range of -2147483648 to 2147483647. So for example on such a system, intval('1000000000000') will return 2147483647. The maximum signed integer value for 64 bit systems is 9223372036854775807. Strings will most likely return 0 although this depends on the leftmost characters of the string. The common rules of integer casting apply. EXAMPLES
Example #1 intval(3) examples The following examples are based on a 32 bit system. <?php echo intval(42); // 42 echo intval(4.2); // 4 echo intval('42'); // 42 echo intval('+42'); // 42 echo intval('-42'); // -42 echo intval(042); // 34 echo intval('042'); // 42 echo intval(1e10); // 1410065408 echo intval('1e10'); // 1 echo intval(0x1A); // 26 echo intval(42000000); // 42000000 echo intval(420000000000000000000); // 0 echo intval('420000000000000000000'); // 2147483647 echo intval(42, 8); // 42 echo intval('42', 8); // 34 echo intval(array()); // 0 echo intval(array('foo', 'bar')); // 1 ?> NOTES
Note The $base parameter has no effect unless the $var parameter is a string. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.1.0 | | | | | | | Throws E_NOTICE and returns 1, when an object is | | | passed to $var. | | | | +--------+---------------------------------------------------+ SEE ALSO
boolval(3), floatval(3), strval(3), settype(3), is_numeric(3), Type juggling, BCMath Arbitrary Precision Mathematics Functions. PHP Documentation Group INTVAL(3)
All times are GMT -4. The time now is 10:08 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy