08-17-2006
the propper do to is using epoch. (seconds since 1.1.1970) because if you have DST is can
srew your script very badly. also the math is integer math and therefore very easy.
you can use date to convert from and into epoch.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I write a sh script that zip and copy to tape all files that older then 2 hours.
1. The way I choose is - touch a file with "now - 2 hours", then use fine with '! -newer'
2. Do you have any other idea to do it ?
tnx. (1 Reply)
Discussion started by: yairon
1 Replies
2. UNIX for Dummies Questions & Answers
Hi
I have a date in a variable in Unix script and have to subtract -1 from the date.
fromdate='07/13/2009'
Now we want to subract one day from it i.e the end result should be '07/12/2009'
Any suggestions?
Thanks (2 Replies)
Discussion started by: akashtcs
2 Replies
3. Shell Programming and Scripting
need some help on the below requirement:
File1:
SV,22,20100501140000,JFK,RUH
SV,29,20100501073000,BOM,RUH
SV,29,20100501073000,SIN,RUH
third filed is datetime which is of the format (yyyymmddhh24miss)
File2
JFK,+,0500
BLR,-,0530
SIN,-,0800
for every line of file 1, take 4... (9 Replies)
Discussion started by: ssantoshss
9 Replies
4. Shell Programming and Scripting
Dear All,
Please help with a script which can accomplish the following:
Input table:
$1 $2 $3
Student1 1 50
Student2 56 75
Student3 77 100
Desired Output:
$1 $2 $3 $4
Student1 1 50
Student2 56 75 6
Student3 77 ... (4 Replies)
Discussion started by: saint2006
4 Replies
5. Shell Programming and Scripting
Hi Folks
I have tried awk command to conditionally add or subtract value from specific row in a file. The test file looks like:
# cat test.txt
cont x y
Max 0.3 0.9
Min 0.2 0.9
diff 0.1 0
# awk '{for (i=2; i <=NF; i++) if ($i== "0") $i=$i+0.2; print}' test.txt
Output:
cont... (1 Reply)
Discussion started by: dixits
1 Replies
6. Shell Programming and Scripting
Hi All,
I have a file with thousands of lines in the following format, where
Field1=First 8 characters
Field2-9-16 characters
Field3=17-26 characters
I need to add Field 1 and Field2 and subtract the result from Field 3.
Field3=Field3 - (Field1 + Field2)
0012.00 0010.00 0001576.53... (4 Replies)
Discussion started by: nua7
4 Replies
7. UNIX for Dummies Questions & Answers
---------- Post updated at 01:58 PM ---------- Previous update was at 01:48 PM ----------
For some reason my question is not getting printed. Here are the details:
Greetings.
I would like to add/subtact an integer to/from two columns of integers. I feel like this should be easy using awk... (3 Replies)
Discussion started by: Twinklefingers
3 Replies
8. Shell Programming and Scripting
Hi below is a file
Date Category Time Attempts Success
2/17/2014 PayFlow ATB 0.999988 4039104 4039057
2/18/2014 PayFlow ATB 0.999912 4620964 4620558
2/19/2014 PayFlow ATB 0.999991 4380836 4380796
2/20/2014 PayFlow ATB 0.999988 5031047 5030985
2/21/2014 ... (5 Replies)
Discussion started by: villain41
5 Replies
9. Shell Programming and Scripting
Hello All,
I am working on script where I need to add hours,minutes or seconds in the time.Time is not the current but it could be future time.I thought I can store that time in variable and add hours.minutes or second but I am not able to add that in the time that is stores in a variable.
Time... (9 Replies)
Discussion started by: anuragpgtgerman
9 Replies
10. Shell Programming and Scripting
Gents,
Is there the way to increase hours (+3) to the data with the format following.
example
JDhhmmss
335193508
input
335193508
335203508
335213508
335223508
335233508
output
335223508
335233508
336003508
336013508 (14 Replies)
Discussion started by: jiam912
14 Replies
LEAVE(1) BSD General Commands Manual LEAVE(1)
NAME
leave -- remind you when you have to leave
SYNOPSIS
leave [[+]hhmm]
DESCRIPTION
leave waits until the specified time (within the next 12 hours), then reminds you that you have to leave by writing to the TTY that you exe-
cuted leave on.
You are reminded 5 minutes and 1 minute before the actual time, at the time, and every minute thereafter. When you log off, leave exits just
before it would have printed the next message.
OPTIONS
hhmm The time of day is in the form hhmm where hh is a time in hours (on a 12 or 24 hour clock), and mm are minutes.
However, all times are converted to a 12 hour clock, and assumed to be in the next 12 hours. An attempt to set an alarm for farther
into the future will be truncated to within the next 12 hours.
+ If the time is preceded by '+', the alarm will go off in hours and minutes from the current time.
If no argument is given, leave prompts with "When do you have to leave?" A reply of newline causes leave to exit, otherwise the reply is
assumed to be a time. This form is suitable for inclusion in a ~/.login or ~/.profile.
SEE ALSO
calendar(1), csh(1), sh(1)
HISTORY
The leave command appeared in 3.0BSD.
BUGS
In the modern age with X(1) and window multiplexing programs like window(1) and screen(1), the leave command's reminders and admonitions
might not be seen if the user has the window where leave was started minimized or obscured.
This all begs for a more general user notifications system to be implemented.
BSD
January 19, 2002 BSD