I get headache with quote.

Here's exposure problem :

In the following :
Note 1 :
file_to_grep_in is the result of the zypper command issue in the current running bash script
like :

Code:

zypper  zypper_option package_to_install > file_to_grep_in

To use the grep function in a BASH program, I modify the command as follows:

Code:

cnt=$( grep -c -e grep_param_1 -e grep_param_2   -e ..... -e ........   file_to_grep_in )

and to follow the script I print result on the console I used to use

Code:

CMD="all command and parameters stuff"
 echo "command : $CMD"
 $CMD

Which gives

Code:

CMD="cnt=$( grep -c -e grep_param_1  -e grep_param_2    -e grep_param_3   file_to_grep_in )"
echo "command : $CMD"
$CMD

Note 2 :
Each of the parameters used by grep consist of two or three parts. Each party being represented by a variable:
Which gives

Code:

CMD="cnt=$( grep -c -e $grep_param_1_part1 $grep_param_1_part2   -e $grep_param_2_part1 $grep_param_2_part2   -e $grep_param_3_part1 $grep_param_3_part2   $grep_param_3_part3   $file_to_grep_in )"
echo "command : $CMD"
$CMD

How to obtain this
I show the printout I want to get for the script command : echo "command : $CMD" and the variab le CMD contain : CNT=$(.................)

Code:

CNT=$(grep -c -e "Non-option program arguments: 'nxclient' "  -e "Selecting  'nxclient-" -e  "from repository 'nxclient' for installation"  /tmp/nxclient_install.log )

Remark 1 first parameter : see at the end nxclient between single quote --> 'nxclient'
Remark 2 second parameter : see at the end nxclient with single quote and dash --> 'nxclient-
Remark 1 third parameter : see in the middle nxclient between single quote --> 'nxclient'

$grep_param_1_part1 = Non-option program arguments: '
$grep_param_1_part2 = nxclient'
$grep_param_2_part1 = Selecting '
$grep_param_2_part2 = nxclient-
$grep_param_3_part1 = from repository '
$grep_param_3_part2 = nxclient
$grep_param_3_part3 = ' for installation
$file_to_grep_in = /tmp/nxclient_install.log


By the way is it possible to add parameter 4 with this constraint :

Look for

Code:

param_4_part_1 = >The following NEW package is going to be installed:<
at the very beginning at the next line 
param_4_part_2 = >nxclient<