It depends on what date utility you're using. If you're on a system where the desciprtion of the -d option on the date man page is something like:
or if there is no -d option, you need to use one of the methods on the web site I referred you to in an earlier message in this thread. If you're on a system where the date man page description is something like:
Then you can use:
to get the time in seconds for the given dates specifed by having $value set to the second field on the two lines you're talking about and then convert the seconds since the Epoch to days since the Epoch and subtract. You can use "+%a" to get the abbreviated weekday name corresponding to the given dates.
Neither -d nor +%s are defined by the standards, so any use of either of these is not portable between different systems.
Hi,
I need some help figuring this out, I think it can be done using awk but I don't know how.
So, I want to take two input files, subtract some columns with each other and then output to a new results file.
InFile1.txt
AAA 100 200 BBB
CCC 300 400 DDD
InFile2.txt
AAA 50 60 BBB
CCC 70... (7 Replies)
I am trying to find out the number of days between the current date and user defined date.
I took reference from here for the date2jd() function.
Modified the function according to my requirement. But its not working properly.
Original code from here is working fine.
#!/bin/sh... (1 Reply)
Hi,
I want to subtract a number from all columns except the first column. I have a number of files each having different columns around 60/70. How to do that in awk or any other command?
Thanks
Input
Col 1 Col 2 Col3 - - - - Col55
1 .0123 .098 - - - 0.6728
2 - -... (3 Replies)
I have a CSV file in the below format.
while generating CSV file from excel sheet , date in excel sheet(Format :Mon 8/28/2012) got converted into the below format with numbers 41148,41149 so on.
Could anyone please let me know how to the convert the numbers(41148,41149 so on.) to its actual... (2 Replies)
Hi,
Can you please let me know code for the below (in korn shell)
a) Subtract month(s) from given date
b) Subtract day(s) from give date
c) Subtract month(s) from given timestamp
d) Subtract day(s) from give timestamp (1 Reply)
Hi,
I have 2 files in below formats
File1_Stored.txt
ABC:100, 83
ABC:84, 53
ABC:14, 1222And
File2_Stored.txt
ABC:100 , 83
ABC:84 , 1553
ABC:524 , 2626I am trying to get the 3rd file in below format. So, whenever difference is 0 it shouldn't appear but if the difference is not 0 then... (2 Replies)
Hi all,
I have been researching to obtain SSL certification expiry for most of our webistes. For some cases, some hosts where not directly accessible so i finally got a solution working with curl using my proxy. This lists the expiry date which i'm finally looking for.
# curl --proxy... (4 Replies)
current date command runs well
awk -v t="$(date +%Y-%m-%d)" -F "'" '$1 < t' myname.dat
subtract 30 days fails
awk -v t="$(date --date="-30days" +%Y-%m-%d)" -F "'" '$1 < t' myname.dat
awk command in hp unix subtract 30 days automatically from current date without date illegal option error... (20 Replies)
Discussion started by: kmarcus
20 Replies
LEARN ABOUT OSF1
dp
dp(8) System Manager's Manual dp(8)NAME
dp - parse dates RFC 822-style
SYNOPSIS
/usr/lib/mh/dp [-form file] [-format string] [-help] [-width columns] dates
OPTIONS
Overrides the default output format of dp. The output is formatted according to the instructions in the specified file. This must be a
format file; see mh-format(4). Overrides the default output format of dp. The output is formatted according to the instructions in the
specified string. This must be a format string; see mh-format(4).
The argument to the -format option must be interpreted as a single token by the shell that invokes dp. Therefore, you should usually
place the argument to this option inside double quotes ("). Prints a list of the valid options to this command. Specifies the
width of the screen in columns.
The defaults for this command are as follows:
-width defaults to the width of the terminal
DESCRIPTION
The dp command parses dates according to the ARPA Internet standard. It also understands many non-standard formats, such as those produced
by TOPS-20 sites and some UNIX sites using ctime(3). It is useful for seeing how MH will interpret a date.
The dp program treats each argument as a single date, and prints the date out in the official RFC 822 format. Hence, it is usually best to
enclose each argument in double quotes (") for the shell.
EXAMPLES
This is the default format string used by dp:
%<(nodate{text})error: %{text}%|%(pretty{text})%>
When an error is detected, this prints error: and the date that is in error. Otherwise, it outputs the proper RFC 822 format of the date.
FILES
User profile.
SEE ALSO
Commands: ap(8)
Standard for the Format of ARPA Internet Text Messages (RFC 822)
dp(8)