if -d /var/logroot/$(date -d "yesterday" '+%Y-%m-%d')
.....
No. Neither:
nor:
are valid commands on UNIX and Linux systems unless you have created your own -d utility. And, creating a utility with a name starting with a hyphen isn't a good idea. (There are too many contexts where a command name starting with a hyphen won't be recognized as a command name.)
You can use the code MadeInGermany suggested:
or the synonym:
to determine whether the string contained in the expansion of $i is a directory.
And, the code:
isn't correct either, unless you are trying to run the ls utility with the variable i set to an empty string in its environment. Even using:
won't do what you want unless you can guarantee that there will never be more than one file in that directory that contains yesterday's date as part of its name.
A safer (and faster) way to do something like this would be:
But, note also that dd/mm/YYYY (the date format you used as an example) and YYYY-mm-dd (the date format created by your invocation of the date utility) are not the same. And, if you expect a filename in one format to match the string produced by date, you had better be sure that they are using the same format.
Don Cragun, tons of thanks for show me the MadeInGermany way. Amazing explanation.
Although with my method i have the solution i think your german way its more simple, and yep, never have 2 subdirectorys (with date name) in the same directory, its a automatic rutine to create dirs.
Hi All,
I am entering StartDate and EndDate as parameters to script. Want to have an check saying, "If StartDate is greater than EndDate then don't execute the script".
Pseudo Code:
if
then
Execute script
else
exit 0
fi
Can you please help me on the same?
Thanks and... (4 Replies)
Hi,
I want to convert two datetime fields to find out if the difference is one hour, in linux I've done this by converting both the datetime values to unix epoch time and subtracting them to find out if the difference is more than 3600s, however this does not work in hp-ux.
I've these... (3 Replies)
Hi to all.
When you have to compare a lot of dates in a SH code, there is a way to directly compare? For example, how can I check if two dates differ in less than a week?
Thank's for reading. (2 Replies)
I want to compare a list of dates in a file with today's date & list only dates that are less than only 60 days old . please help . the date in the file are in format
11-FEB-2009
02-FEB-2009
26-JAN-2009
24-JAN-2009
13-JAN-2009
16-DEC-2008
10-DEC-2008
01-DEC-2008
25-NOV-2008
19-NOV-2008... (3 Replies)
Hi all,
How to check whether the given the two dates is minimal.
example:
Date 1 : 23-03-2008 with timestamp
Date 2: 20-03-2008 With tmestamp
I want to compare the twodates and which it gives the minimum date
i wnat to get the output like this below
output: the Date2 is... (1 Reply)
Hi all,
I've written a script which gives the below information...
End Date&Time: 2008-10-21 10.54.37
Now i want to calculate this time with the current time.. and if its more than 48 hours past with the current time it should echo "48 Hours back"
Please help me..
thanks in... (4 Replies)
Hi Gurus
I am getting the timestamp of the last generated log file
its like this "Oct 31 10:26"
I want to compare this timestamp with the current date in shell script. I want to compare if the
(timestamp-currentime) > 10 minutes
how do i do this.
Thanks
Ragha (2 Replies)
Hi
I am writing a unix program. In that, i should compare two dates.
I would like to know how to compare two dates in unix-whether they are same or not.
pls help (5 Replies)
I have a log file with date format like
10-Oct-02 13:20:29 .....
at the beginning of each line in the log file, and I need to grep data from this file to list the lines with date no longer than one days.
I tried to use awk to do this but it looks very complicated to do it.
Is there... (6 Replies)