awk command issue

Shell Programming and Scripting
1

Hi,

Please could someone advise the issue i have with my awk command ?

my command is :

export NUM_SCENARIOS=`awk -F= '!/^#/ && /NUM_SCENARIOS/{print $2}' /home/environment.properties`

when I echo $NUM_SCENARIOS

this comes back with :

100 10

The issue I have is, there is another variable called "REP_NUM_SCENARIOS" and this value is 10.

I just need the first varible "NUM_SCENARIOS" which the value is 100.

What do i need to amend with my awk command show me just the value of "NUM_SCENARIOS" ?

thankyou

2

whats the contents of environment.properties?

--ahamed

3

can you post the lines of REP_NUM_S.... and NUM_SCENARIOS lines

4

Try:

export NUM_SCENARIOS=`awk -F=  '!/^#/ && /([^_]|^)NUM_SCENARIOS/{print $2}' home/environment.properties`
5

NUM_SCENARIOS=100
REP_NUM_SCENARIOS=10

6 
#using sed
export NUM_SCENARIOS=`sed -n 's/^NUM_SCENARIOS=\([0-9]*\)/\1/gp' file`

#using awk
export NUM_SCENARIOS=`awk -F= '/^NUM_SCENARIOS/ {print $2}' file`

--ahamed

7

Do you get the correct output with?

awk -F"[= ]" '!/^#/ && /NUM_SCENARIOS/{print $2}' /home/environment.properties
8 
 
awk -F= '!/^#/ && $1~/^NUM_SCENARIOS$/{print $2}' /home/environment.properties

---------- Post updated at 04:27 PM ---------- Previous update was at 04:26 PM ----------

 
$ nawk -F= '!/^#/ && $1~/^NUM_SCENARIOS$/{print $2}' test
100

$ cat test 
NUM_SCENARIOS=100
REP_NUM_SCENARIOS=10
9

Thank you this works fine :

export NUM_SCENARIOS=`awk -F=  '!/^#/ && /([^_]|^)NUM_SCENARIOS/{print $2}' home/environment.properties`

now I have a environment.properties.template

with blank values :

NUM_SCENARIOS=
REP_NUM_SCENARIOS=

how can i populate the blank values from the above $NUM_SCENARIOS awk command ?

10 
$ source my_test
$ echo  $NUM_SCENARIOS
100
$ echo  $REP_NUM_SCENARIOS
10
$ cat my_test
NUM_SCENARIOS=100
REP_NUM_SCENARIOS=10