11-28-2001
time arithmetic
Can anyone help please. I am writing a kourne shell script and I am unsure how to do the following:
I have extracted a time string from a logfile, and I have another time string I want to compare it to to see if it's later than the time I'm comparing with.
i.e. expectedSLA="23:00:00", actualDeliveryTime="22:40:00"
I try to do the following:
missedSLA="N"
if [ $actualDeliveryTime > $expectedSLA ]
then
missedSLA="Y"
fi
This always sets missedSLA to "Y". Isn't it supposed to compare using the decimal values of the string? How can I get the above process to work? What can I do? Any help would be greatly appreciated.
Many thanks,
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
i am used to making scripts for hp-ux. but lately i tried to make some for solaris. the problem is that when i tried to execute it it gave me an error the "let: not found". why is that? how can i perform an arithmetic function in the solaris shell script?
thanks :) (2 Replies)
Discussion started by: inquirer
2 Replies
2. UNIX for Dummies Questions & Answers
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
3. Shell Programming and Scripting
Helloo..
I am trying one very simple thing I could not find anything on google..
I have 2 integer variable..and I need to do division...in ksh
where $catch and $num are integer variable..
I tryed with this:
printf "%0.2f" $final=$catch/$num
but it does not work..
any help is... (12 Replies)
Discussion started by: amon
12 Replies
4. Shell Programming and Scripting
Yes I know tcsh sucks for scripting and arithmetic but I have to write a script for multiple users and they all use tcsh.
I have this variable that I 'set' with but pulling numbers off of stings with
set STUFF = `grep string file | awk command`
Now I would like to add up the numbers that... (4 Replies)
Discussion started by: gobi
4 Replies
5. UNIX for Dummies Questions & Answers
Hello,
I have a list of 'inputs' and i want to convert those on the second list named 'Desired Outputs', but i don't know how to do it?
Inputs Desired Outputs
1 2
94 4
276 8
369 10
464 12 ... (0 Replies)
Discussion started by: filda
0 Replies
6. UNIX for Dummies Questions & Answers
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
7. Shell Programming and Scripting
Hello,
Could someone explain how this one is possible:
# @ x = 10 - 11 + 3
# echo $x
-4
I know that writing script using csh is bad idea, but I need to write few lines.
thanks
Vilius (2 Replies)
Discussion started by: vilius
2 Replies
8. Shell Programming and Scripting
Hi,
I need to process a file which contains below data. Usually the files contains both Start and Finish time. but for Few records, it contains only Start. For those records I need to add the finish line by adding 5 minutes to Start time.
Started BBIDX Tue Jun 1 15:15:11 EDT 2010 292308... (1 Reply)
Discussion started by: siba.s.nayak
1 Replies
9. Shell Programming and Scripting
Hello fellow forum members,
I wrote below piece of code to calculate the date after a given date -
date=$DATE_FINAL
declare -a max_month=(0 31 28 31 30 31 30 31 31 30 31 30 31)
eval $(echo $date|sed 's!\(....\)\(..\)\(..\)!year=\1;month=\2;day=\3!')
(( year4=year%4 ))
(( year100=year%100... (9 Replies)
Discussion started by: ektubbe
9 Replies
10. Shell Programming and Scripting
I need to divide the number of white spaces by total number of characters in a file using bash. I am able to get the number of white spaces correctly using:
tr -cd < afile | wc -c
I am also able to get the total number of characters using:
wc -c afile
How do I divide the first... (2 Replies)
Discussion started by: ngabrani
2 Replies
LEARN ABOUT REDHAT
script
SCRIPT(1) BSD General Commands Manual SCRIPT(1)
NAME
script -- make typescript of terminal session
SYNOPSIS
script [-a] [-f] [-q] [-t] [file]
DESCRIPTION
Script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive
session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript.
Options:
-a Append the output to file or typescript, retaining the prior contents.
-f Flush output after each write. This is nice for telecooperation: One person does `mkfifo foo; script -f foo' and another can super-
vise real-time what is being done using `cat foo'.
-q Be quiet.
-t Output timeing data to standard error. This data contains two fields, separated by a space. The first field indicates how much time
elapsed since the previous output. The second field indicates how many characters were output this time. This information can be used
to replay typescripts with realistic typing and output delays.
The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not
set) for the C-shell, csh(1)).
Certain interactive commands, such as vi(1), create garbage in the typescript file. Script works best with commands that do not manipulate
the screen, the results are meant to emulate a hardcopy terminal.
ENVIRONMENT
The following environment variable is utilized by script:
SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most
shells set this variable automatically).
SEE ALSO
csh(1) (for the history mechanism), replay(1).
HISTORY
The script command appeared in 3.0BSD.
BUGS
Script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
Linux July 30, 2000 Linux