12-04-2007
very thx for reply ,
I think I hv not clearly state what my requirement is , I hv re-write it , very thinks if you can help.
# vi file_for_compare
file1.txt;200712031200
file2.txt;200712041457
file3.txt;200712041451
file4.txt;200712051512
I have a file as above , the format is file name + date & time , I would like to compare it with the files in a directory as below
#ls /tmp/directory_for_compare
-rw-r--r-- 1 user edp 4324 Dec 04 14:57 file1
-rw-r--r-- 1 user edp 4324 Dec 04 14:57 file3
-rw-r--r-- 1 user edp 4324 Dec 05 18:57 file12
I would like to find out which file is missing for everyday ( what I want to find out is file name that the file_for_compare have but directory_for_compare don't have and vice versa ) . For example , assume today is 04-Dec , so only compare the file which the creation date is 04-Dec , in the file_for_compare , there are file2 and file3 need to compare , in the directory_for_compare , there are file1 and file3 need to compare ( because only these files creation date is 04-Dec ) , so I would like the output like below :
file_for_compare have but directory_for_compare do not have
"file2"
file_for_compare do not have but directory_for_compare have
"file1"
If today is 5-Dec , then only compare 5-Dec, if today is 6-Dec then only 6-Dec etc , no date input is required .
can advise how to write the script ? thx in advance.
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DP(8) [nmh-1.5] DP(8)
NAME
dp - parse dates 822-style
SYNOPSIS
/usr/lib/mh/dp [-form formatfile] [-format string] [-width columns] [-version] [-help] dates ...
DESCRIPTION
Dp is a program that 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 nmh will interpret a date.
The dp program treats each argument as a single date, and prints the date out in the official 822-format. Hence, it is usually best to
enclose each argument in quotes for the shell.
To override the output format used by dp, the -format string or -format file switches are used. This permits individual fields of the
address to be extracted with ease. The string is simply a format string and the file is simply a format file. See mh-format(5) for the
details.
Here is the default format string used by dp:
%<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>
which says that if an error was detected, print the error, a `:', and the date in error. Otherwise, output the 822-proper format of the
date.
FILES
$HOME/.mh_profile The user profile
PROFILE COMPONENTS
None
SEE ALSO
ap(8), Standard for the Format of ARPA Internet Text Messages (RFC-822)
DEFAULTS
`-format' default as described above
`-width' default to the width of the terminal
CONTEXT
None
BUGS
The argument to the -format switch must be interpreted as a single token by the shell that invokes dp. Therefore, one must usually place
the argument to this switch inside quotes.
MH.6.8 11 June 2012 DP(8)