Shell Programming and Scripting

I am trying to keep variables in a file.

if I have all variables at the same time, I can write them all like below.

Code:

echo $var1","$var2","$var3

But, these variables are being calculated at different times then they are lost
so I want to keep them in a file seperated by "," .

Code:

echo $var1 >> log_file
.
.
.
.
echo ","$var2 >> log_file
.
.
.

is there an option of echo in order to write the variables without creating a new line in the log file.

thanks in advance

Hello snr_silencer,

You can keep them in a single variable and then finally you can print them as follows.

Code:

VAR2=$VAR1","$VAR2
VAR3=$VAR2","$VAR3
echo $VAR3 > Input_file

Hope this helps, letme know if you have any queries.

Thanks,
R. Singh

Code:

echo -n "${var1}," >> log_file
.
.
echo -n "${var2}," >> log_file
.
.

or

printf "${var1}," >> log_file
.
.
printf "${var2}," >> log_file

thanks for your quick answers
-n worked

---------- Post updated at 10:50 AM ---------- Previous update was at 10:36 AM ----------

ps: -n option doesnt work in ksh, only works for bash shell

That's when you use the built-in echo. Check if there exists /bin/echo and see its man page.

The behavior of echo varies considerably from system to system, shell to shell, and with various environment variable settings when there are any backslash (\) characters in any of the arguments and when the 1st character of the 1st argument is a minus sign (-) character. Using printf instead of echo in these conditions will prevent lots of headaches later if you ever move to a different environment or if some other user with a different shell or environment variables tries to use your code.