Bash-script: How to combine a command with a variable name?

Question

I am writing a bash script. I want to be able to change the numbers assigned to -tot_src, etc, in the below line that is included in the bash script. How do I do this?

./eperftool -tot_src=250 -tot_rep=200 -loss=3:200

First step would be to declare e.g. the following:

TOT_SRC = 273

I tried the following, but it is not working:

 ./eperftool -tot_src=$TOT_SRC -tot_rep=200 -loss=3:200

TOT_SRC = 273 should be TOT_SRC=273 without white space

another.anon.coward
– another.anon.coward

2012-05-08 16:54:09 +00:00
Commented May 8, 2012 at 16:54 — another.anon.coward
– another.anon.coward, Commented May 8, 2012 at 16:54

Chris · Accepted Answer · 2012-05-08 19:43:26Z

1

In contrast to most programming languages, bash is sensitive to blanks in assignments.

right:

TOT_SRC=273

wrong:

TOT_SRC = 273

edited May 8, 2012 at 19:43

Chris

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answered May 8, 2012 at 17:14

user unknown

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