The "value too great for base" happens because there is a number with a leading zero, and bash assumes octal, and 8 is too high for an octal number.
It happens with
Code:
day=$((day+1))
or later with month.
As always there is an escape from such (mis)feature: a 10# prefix forces a base10=decimal
Code:
day=$((10#$day+1))
month=$((10#$month))
Now the leading zero are removed.
---------- Post updated at 11:15 ---------- Previous update was at 10:52 ----------
You certainly want
Code:
if [ \( $year4 -eq 0 -a \
$year100 -ne 0 \) -o \
$year400 -eq 0 ]
then
declare -a max_month=(0 31 29 31 30 31 30 31 31)
fi
As Jim said, such calculations are error prone.
perl is safer because it uses the libc routines.
Thanks madeingermany...I tried but the error is still because of line I mentioned in my first post n I am using AIX so most of the commands don't work...I need to do date calculation for an arbitrary date so tz doesn't work for me either
~Ekta
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", ... (2 Replies)
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)
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)
Hi all,
I would appreciate if anyone knows how to perform adding to date.
As for normal date, i can easily plus with any number.
But when it comes to month end say for example 28 Jun, i need to perform a plus with number 3, it will not return 1 Jul.
Thanks in advance for your help. (4 Replies)
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)
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)
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
8. Post Here to Contact Site Administrators and Moderators
page
unix com/answers-frequently-asked-questions/13785-yesterdays-date-date-arithmetic.html
Date Arithmetic with the Shell
has link of
www samag com/documents/s=8284/sam0307b/0307b.htm
which is no longer.
Is this the correct place to post this?:confused:
and I got message... (1 Reply)
I have a file (main.lst) containing a list of dates in DDMMYYYY format. The dates will mostly be the same but it is possible to have multiple dates and these need not be in chronological order. I have another file containing another list of dates (holidays.lst).
The task is to get the latest... (5 Replies)
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 LINUX
rbash
RBASH(1) General Commands Manual RBASH(1)NAME
rbash - restricted bash, see bash(1)RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO bash(1)GNU Bash-4.0 2004 Apr 20 RBASH(1)
07-09-2017
