[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

How to concantenate variables to create a file name?

Posted on 2001-06-28
6
Medium Priority
?
295 Views
Last Modified: 2013-12-06
I want to create a file name in a script by concantenating variables.
      EXAMPLE:   myfile062701.txt
 
The "myfile" and the ".txt" are the same every time on the file received.  The six digits represent the current date.  When I create one variable

THEDATE=" date "+%m%d%y""
echo $THEDATE
062701

When I try to concantenate the date to the rest of the name, I get the literals, not the value.  (i.e. date +%m%d%y)
0
Comment
Question by:clreising
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 1

Expert Comment

by:ggs54
ID: 6235677
this works on my HP-UX system.


echo myfile`date +%m%d%y`".txt"

yields:

myfile062801.txt

be sure to delimit your date function with backquotes.

Good luck!
0
 
LVL 1

Expert Comment

by:ggs54
ID: 6235679
this works on my HP-UX system.


echo myfile`date +%m%d%y`".txt"

yields:

myfile062801.txt

be sure to delimit your date function with backquotes.

Good luck!
0
 
LVL 11

Expert Comment

by:griessh
ID: 6235731
>> THEDATE=" date "+%m%d%y""
>> echo $THEDATE
>> 062701

That doesn't sound true. You have to evaluate THEDATE to get the date.

THEDATE=" date "+%m%d%y""
echo
date +%m%d%y
echo `$THEDATE`
062801

Like ggs54 said already (just wanted to point out the difference).

======
Werner
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 3

Accepted Solution

by:
interiot earned 400 total points
ID: 6235890
I assume you're using Bash...

Quotes take the string in literally.  To actually execute date, use backticks:

   THEDATE=`date "+%m%d%y"`
   echo myfile${THEDATE}.txt

this works also:

   CATTED="myfile$(date "+%m%d%y").txt"
   echo $CATTED
0
 
LVL 14

Expert Comment

by:chris_calabrese
ID: 6235944
OK, let's get really picky... the `` syntax is depricated in POSIX, and you have to be careful of quoting, so the only "correct" answer so far is the CATTED= line above.
0
 

Author Comment

by:clreising
ID: 6238798
I am on AIX using ksh.
This is what worked.
Thanks for the input.

THEDATE=`date "+%m%d%y"`
echo $THEDATE
FACILITY="myfile${THEDATE}.txt"
echo $FACILITY    
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This tech tip describes how to install the Solaris Operating System from a tape backup that was created using the Solaris flash archive utility. I have used this procedure on the Solaris 8 and 9 OS, and it shoudl also work well on the Solaris 10 rel…
Installing FreeBSD… FreeBSD is a darling of an operating system. The stability and usability make it a clear choice for servers and desktops (for the cunning). Savvy?  The Ports collection makes available every popular FOSS application and packag…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Suggested Courses

650 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question