echo "$valeur_complete" |cut -d= -f2 |cut -d/ -f1

echo $var | awk -F= '{ split($2,arr,"//" ) ; print arr[1]}'

echo $var | awk -F'=|//' '{print $2}'

NAME
     nawk - pattern scanning and processing language
 
SYNOPSIS
     /usr/bin/nawk   [-F ERE]   [-v assignment]    'program'    |
     -f progfile... [argument...]
 
     /usr/xpg4/bin/awk [-F ERE]  [-v assignment...]  'program'  |
     -f progfile... [argument...]
 
DESCRIPTION
     The /usr/bin/nawk and  /usr/xpg4/bin/awk  utilities  execute
     programs  written in the nawk programming language, which is
     specialized for textual data manipulation. A nawk program is
     a sequence of patterns and corresponding actions. The string
     specifying program must be enclosed in single quotes (')  to
     protect  it  from interpretation by the shell.  The sequence
     of pattern - action statements can be specified in the  com-
     mand  line  as program or in one, or more, file(s) specified
     by the -f progfile option. When input is read that matches a
     pattern,  the  action  associated  with  the pattern is per-
     formed.
 
     Input is interpreted as a sequence of records. By default, a
     record  is  a  line, but this can be changed by using the RS
     built-in variable. Each record of input is matched  to  each
     pattern  in the program. For each pattern matched, the asso-
     ciated action is executed.
 
     The nawk utility interprets each input record as a  sequence
     of  fields  where,  by  default, a field is a string of non-
     blank characters. This default white-space  field  delimiter
     (blanks and/or tabs) can be changed by using the FS built-in
     variable or the -F ERE option. The nawk utility denotes  the
     first field in a record $1, the second $2, and so forth. The
     symbol $0 refers to the entire  record;  setting  any  other
     field  causes the reevaluation of $0. Assigning to $0 resets
     the values of all fields and the NF built-in variable.
 
OPTIONS
     The following options are supported:
 
     -F ERE
           Define the input field separator to  be  the  extended
           regular  expression ERE, before any input is read (can
           be a character).
. . . . . . . . .
 
EXAMPLES  
. . . . . . . . .
 
Example 12: Same, with input fields separated  by  comma  or
     space and tab characters, or both:
 
     BEGIN { FS = ",[\t]*|[\t]+" }
           { print $2, $1 }

root@milan:[/root]# echo "test1,test2:test3//test4" | nawk -F',|:|[/]+[/]' '{ print $1 }'
test1
root@milan:[/root]# echo "test1,test2:test3//test4" | nawk -F',|:|[/]+[/]' '{ print $2 }'
test2
root@milan:[/root]# echo "test1,test2:test3//test4" | nawk -F',|:|[/]+[/]' '{ print $3 }'
test3
root@milan:[/root]# echo "test1,test2:test3//test4" | nawk -F',|:|[/]+[/]' '{ print $4 }'
test4
root@milan:[/root]# id | nawk -F'[(]|[)]' '{ print $2 }'  
root

cd /tmp
rm -fr * .*