How to read from file and convert from string to integer?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Convert string number to a integer

I have data as below "ROWS merge process complete. thousand rows changed" I need to get a variable assigned the value of 1000. I mean convert the string thousand to 1000. Any help or pointer. Please use CODE tags as required by forum rules!

2. Shell Programming and Scripting

How to convert string into integer in shell scripting?

Hi All, sessionid_remote=$(echo "select odb_sessionid from sysopendb where odb_dbname='syscdr';" | sudo -u cucluster ssh ucbu-aricent-vm93 "source /opt/cisco/connection/lib/connection.profile; $INFORMIXDIR/bin/dbaccess sysmaster@ciscounity") for sid in $sessionid_remote;do if * ]];...

3. Shell Programming and Scripting

[Solved] need to convert decimal to integer

Using below command awk 'NR==FNR{A=$1;next} {sum+=($2*A)}END{OFMT="%20f";print int(sum)}' Market.txt Product.txt answer:351770174.00000 how to convert this to 351770174. when i try with below command i am getting different result. awk 'NR==FNR{A=$1;next}...

4. Shell Programming and Scripting

how to compare string integer with an integer?

hi, how to I do this? i="4.000" if ; then echo "smaller" fi how do I convert the "4.000" to 4? Thanks!

5. Shell Programming and Scripting

Convert to Integer

Hi fellows!! i'm doing something which is not working out for me properly which i don't understand why nowdate=`date +%s` echo $nowdate now the problem how to convert a date which is stored in a variable mydate="22/Oct/2011" mydate=`date -d '$mydate' +%s` it gives error...

6. Programming

read integer from file C

Hi , Can you have a look at my code it should display integer in file but it doesn't #include <stdio.h> /* This function reads two values from a file. */ int demonstrate_fscanf(void) { FILE *InFile; int b, numValuesRead; InFile = fopen("fadata.rtf", "r"); if...

7. Shell Programming and Scripting

Read Variable From Fille And Convert it to Integer

I read 3 variables from from Inputfile.txt the third one "startnumber" is a number when i compare it with 9 ($startnumber -le 9) it give's me a "unary operator expected", i know that -le is for number comparison. What i need is to convert $startnumber to integer (i have try to do it with expr but...

8. Shell Programming and Scripting

how to convert string to an integer and how to do calculations like add.,sub.,mult. on it

How to convert string into an integer or number For example : % set tim = `date` % echo $tim Tue Feb 22 16:25:08 IST 2011 here How to increment time by 10 hrs like 16+10 , here 16 is a string in date cmd. .. how to convert 16 to an integer and added to a another nimber ? Thanks...

9. Programming

How i can read a long integer from standar input and a string with as many characters as specified..

how i can read a long integer from standar input and a string with as many characters as specified in the number? i thing that i must use the read command ofcourse....

10. UNIX for Dummies Questions & Answers

convert from an integer to a string

i want to convert from an integer to a string..in unix...i am writing a C program with embedded SQL... I remeber using itoa...but for some reason it doesnt work......i cant find it in the manual..... Maybe that is the wrong command..... but i have checked Dev Studio.....and it doest exist in the...

LEARN ABOUT OSX

sleep

SLEEP(1)						    BSD General Commands Manual 						  SLEEP(1)

NAME

     sleep -- suspend execution for an interval of time

SYNOPSIS

     sleep seconds

DESCRIPTION

     The sleep command suspends execution for a minimum of seconds.

     If the sleep command receives a signal, it takes the standard action.

IMPLEMENTATION NOTES

     The SIGALRM signal is not handled specially by this implementation.

     The sleep command will accept and honor a non-integer number of specified seconds (with a '.' character as a decimal point).  This is a non-
     portable extension, and its use will nearly guarantee that a shell script will not execute properly on another system.

EXIT STATUS

     The sleep utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     To schedule the execution of a command for x number seconds later (with csh(1)):

	   (sleep 1800; sh command_file >& errors)&

     This incantation would wait a half hour before running the script command_file.  (See the at(1) utility.)

     To reiteratively run a command (with the csh(1)):

	   while (1)
		   if (! -r zzz.rawdata) then
			   sleep 300
		   else
			   foreach i (`ls *.rawdata`)
				   sleep 70
				   awk -f collapse_data $i >> results
			   end
			   break
		   endif
	   end

     The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
     it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
     is created).  The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
     courteously by sleeping for 70 seconds in between each awk job.

SEE ALSO

     nanosleep(2), sleep(3)

STANDARDS

     The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

HISTORY

     A sleep command appeared in Version 4 AT&T UNIX.

BSD
								  April 18, 1994							       BSD

Shell Programming and Scripting