Shell Programming and Scripting

Hi,

I would like to replace a "." with timestamp.
Constraint : I am making use of an existing shell script(called by a C program ) which reads the sed command from a properties file.I cant use/pass variables

Line in C program - $(echo ${filename} | sed "$TRANSFORM"
$TRANSFORM is populated using the line in properties file as below

Code:

Name-Transform: s/.xml$/$(date +%Y).xml/

input : abc.xml
Output : abc.$(date +%Y).xml
Expected output : abc2015.xml

Any idea ?

Thanks in advance

Hello mohanpadamata,

As per forum rules, please use code tags for commands/inputs/codes used in your posts, following is the URL for rules of forum.
https://www.unix.com/misc.php?do=cfrules

As for your requirement following may help you in same.

Code:

echo $A
abc.xml
echo $A  | awk -vDATE=`date +%Y` '{sub(/\./,"&"DATE".",$0);print}'

Output will be as follows.

Code:

abc.2015.xml

Thanks,
R. Singh

There are several things wrong here:So what is really going on here?

Is this a homework assignment?

Sorry Don. A bit detailed explanation,

Code calls:
Shell script A calls a C program
C program calls Shell script B

Shell script B & C-program are fixed. I can't change them. Shell script B gets the sed string from a properties file .

Properties file contents -> Name-Transform: s/.xml$/$(date +%Y).xml/

Shell script B:
-> gets and stores the sed string in $TRANSFORM.
-> Calls the command - $(echo ${filename} | sed "$TRANSFORM" , for substitution.

Sorry for misleading. Below are the testing results.

input filename : abc.xml
I am getting Output as : abc.$(date +%Y).xml
I am Expecting output : abc2015.xml

What is required for me? I need the sed string which i can use in properties file.

Please advise . Let me know if you need more details.

Whoever created this "C-program calling B-script reading properties file" must have documented their ideas on its usage and structures. What's in this documentation? Did this ever work?