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Full Discussion: UNIX script to replace old date with current date dynamically in multiple files present in a folder
Top Forums UNIX for Beginners Questions & Answers UNIX script to replace old date with current date dynamically in multiple files present in a folder Post 303034681 by Shankar455 on Thursday 2nd of May 2019 08:25:37 AM
Old 05-02-2019
UNIX script to replace old date with current date dynamically in multiple files present in a folder
I am trying to work on a script where it is a *(star) delimited file has a multiple lines starts with RTG and 3rd column=TD8 I want to substring the date part and
I want to replace with currentdate minus 15 days. Here is an example. iam using AIX server

Code:
$ cat temp.txt
RTG*888*TD8*20180201~
TWW*888*RD8*20180201-20180201~
RTG*888*TD8*20180201-20180201~
KCG*888*TD8*20180201-20180201~

I want the output as below by changing date. Please help. I am looking for UNIX script to make it work for all files present in that directory

Code:
RTG*888*TD8*20190417~
TWW*888*RD8*20180201-20180201~
RTG*888*TD8*20190417-20190417~
KCG*888*TD8*20180201-20180201~

Thanks in advance

Code:
for file in *; do
   # check if it's a file
   if [ ! -f "$file" ]; then
        # if not, next entry
        continue;
   fi

   # run the script
   while IFS='*' read -r str1 num str2 date; do
        if ["$str1" = "DTP"] || ["$str2" = "D8"]; then
            curdate=$(date +%Y%m%d)
            date="${curdate}-${curdate}~"
        fi
        printf "%s*%s*%s*%s\n" "$str1" "$num" "$str2" "$date"
    done < "$file"

done

Last edited by vgersh99; 05-02-2019 at 10:37 AM.. Reason: code tags, please!
 

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LEARN ABOUT DEBIAN

rdate

rdate(1M)                                                 System Administration Commands                                                 rdate(1M)

NAME

       rdate - set system date from a remote host

SYNOPSIS

       rdate hostname

DESCRIPTION

       rdate sets the local date and time from the hostname given as an argument. You must have the authorization solaris.system.date on the local
       system. Typically, rdate is used in a startup script.

       The inetd daemon responds to rdate requests. To enable inetd response, the lines invoking the time command in inetd.conf must not  be  com-
       mented out.

USAGE

       The rdate command is IPv6-enabled. See ip6(7P).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWrcmdc                    |
       +-----------------------------+-----------------------------+

SEE ALSO

       inetd(1M), inetd.conf(4), attributes(5), ip6(7P)

SunOS 5.10                                                          15 Feb 2001                                                          rdate(1M)
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