Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: arithmetic syntax
Top Forums UNIX for Dummies Questions & Answers arithmetic syntax Post 51096 by paprbagprincess on Tuesday 11th of May 2004 12:58:08 AM
Old 05-11-2004
arithmetic syntax
okay, I'm a complete beginner, and I keep getting stuck on the syntax here. I want to write a script where I read the current time as minutes and seconds, convert the minutes to seconds, and add the two, then redirect the output to a file. the command takes two arguments, which will also be redirected to the file. This is what I have:

echo $1: $2: >> tmk
set min=`date +%M`
set sec=`date +%S`
set total=`($min * 60) + $sec`
echo $total >> tmk

I keep getting a badly placed bracket error on the set total line. Any suggestions?

I want to be able to use the script to input a number of times, then add or subtract them depending on the first two arguments at a later time.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Arithmetic In UNIX

I am a beginner and I have been searching the web all morning for this answer but can't find it anywhere. I know that prtint 1*2 will return 1*2 what if i actually want the problem to be calculated so i want print 1*2 to return 2 How is this done? (3 Replies)
Discussion started by: tygun
3 Replies

2. Shell Programming and Scripting

Can I use wc -l with arithmetic expression?

Folks, I am wondering that i can use something like this in one line. For example, $((cat filename > wc -l) / 2) It doesn't work; how to get it work using command substitution? Moreover, is there any option for wc -l not to return filename after the line counts? wc -l filename would... (3 Replies)
Discussion started by: lalelle
3 Replies

3. Shell Programming and Scripting

Help with arithmetic operation

I am using egrep to extract numbers from a file and storing them as variables in a script. But I am not able to do any arithmetic operations on the variables using "expr" because it stores them as char and not integers. Here is my code and the error I get. Any help will be appreciated. #!/bin/sh... (3 Replies)
Discussion started by: emjayshaikh
3 Replies

4. Shell Programming and Scripting

Arithmetic on timestamps

Hi Friends, please advise on shell script to add two time stamps for example : a=12:32 b=12:00 c=a+b=00:32 please help me to find shell script to add to two time stamps, as i need to convert time from EST to GMT or SST to prepare status of jobs in unix and to specify estimated time to... (3 Replies)
Discussion started by: balireddy_77
3 Replies

5. UNIX for Dummies Questions & Answers

String Arithmetic ?

Hello Experts, In my shell I need to perform some simple subtraction on a value returned as a result of the "wc" command. The code: scanFromLine="100" ## This is returned as string as a result of some operation totalLines=`wc -l "${latestLogFile}" | awk '{print $1}'` ## eg: 200 ... (2 Replies)
Discussion started by: hkansal
2 Replies

6. Shell Programming and Scripting

ksh-script "arithmetic syntax error" comparing strings

Hi all, Iīve already searched the forum but canīt find what i am doing wrong. I am trying to compare two variables using ksh under red hat. The error I get is: -ksh: .: MDA=`md5sum /tmp/ftp_dir_after_transfer | cut -d' ' -f1 ` MDB=`md5sum /tmp/ftp_dir_before_transfer | cut -d' ' -f1 `... (3 Replies)
Discussion started by: old_mike
3 Replies

7. UNIX for Dummies Questions & Answers

Arithmetic: how to??

Hello all, I'd like to know how to perform arithmetic on multiple files. I have got many tab-delimited files. Each file contains about 2000 rows and 2000 columns. What I want to do is to to sum the values in each row & column in every file. The following explains what I want to do; ... (9 Replies)
Discussion started by: Muhammad Rahiz
9 Replies

8. UNIX for Dummies Questions & Answers

syntax error: invalid arithmetic operator

hi, i have a bash script that i want to receive a a string from another bash file. But because the string has a dot in the middle it gives me an error. The error is in this line: let valor=$1 and the value passed is rules.txt the error is: let: valor=rules.txt: syntax error: invalid... (2 Replies)
Discussion started by: limadario
2 Replies

9. Shell Programming and Scripting

ksh Arithmetic syntax error while comparing decimal numbers

Hello, I am having a problem when i execute following script on RHEL 6.4. Same script works fine on another machine where I have same version of RHEL and KSH. Below is the rpm and RHEL version. ossvm12(0)> rpm -qa | grep ksh ksh-20100621-19.el6.x86_64 ossvm12(0)> cat... (7 Replies)
Discussion started by: Adithya Gokhale
7 Replies

10. Shell Programming and Scripting

Arithmetic syntax error

Hello, I am new to shell scripting and getting the error "arithmetic syntax error" on line 55 of my script. Below is line 55 and 56 Backup=$ (( $Year*365+$Day )) if ] then PrevHostname=$Hostname; PrevBackup=$Backup Error: ./mksysbChk.ksh: line 56: *365+as : arithmetic syntax... (10 Replies)
Discussion started by: hasn318
10 Replies

LEARN ABOUT DEBIAN

mp3cut

MP3CUT(1)							   User Command 							 MP3CUT(1)

NAME

       mp3cut - cut and assemble MP3 files

SYNOPSIS

       mp3cut  [ -o outputfile ] [ -T title ] [ -A artist ] [ -N album-name ] [ -t [hh:]mm:ss[+ms]-[hh:]mm:ss[+ms] ] mp3file [[ -t ...	] mp3file1
       ...]

DESCRIPTION

       The mp3cut utility cuts and assembles MP3 files according to the time specifications given on the command line. The mp3 output  is  written
       to  the	outputfile.  If  no outputfile is given on the command-line, the name for the outputfile is created from the name of the first mp3
       file by adding output.mp3 at the end. The -t flag specifies which part of the mp3 file following it will be extracted.

OPTIONS

       -o outputfile
	      Specify where the output is to be written.

       -T title
	      Specify the title ID3 tag for the output file.

       -A artist
	      Specify the artist ID3 tag for the output file.

       -N album-name
	      Specify the album name ID3 tag for the output file.

       -t [hh:]mm:ss[+ms]-[hh:]mm:ss[+ms]
	      Specify which part of the following mp3file will be included in the output file.

		    hh	= hours
		    mm	= minutes
		    ss	= seconds
		    ms	= milliseconds

	      If the starting time is omitted, 00:00:00+00 is used as starting time. If the ending time is omitted, the end of	the  MP3  file	is
	      used as ending time.

EXAMPLES

       mp3cut -o output.mp3 -t 23:42+500-01:23:42+750 input.mp3
	      Cut  the	segment  from  23  minutes,  42  seconds  and 500 milliseconds to 1 hour, 23 minutes, 42 seconds and 750 milliseconds from
	      input.mp3 and write the output to output.mp3.

       mp3cut -t 00:01-00:02 input1.mp3 -t -15:23 input2.mp3 -t 9:87+500- input3.mp3
	      Append the segments from input1.mp3, input2.mp3 and input3.mp3 and write the output to input1.output.mp3.

AUTHORS

       Manuel Odendahl <manuel@bl0rg.net>, Florian Wesch <dividuum@bl0rg.net>

								   February 2005							 MP3CUT(1)
All times are GMT -4. The time now is 12:47 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy