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awk and variable

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# 1  
Old 08-03-2011
Tools awk and variable
hi,

i want to replace a string of characters by a part of this string plus a value:

Code:
CMD="/users/notes01"
NOSERVEUR=03

CMD2=`echo $CMD|awk '{ if ( $0 ~ /notes01/ )
                       { gsub( /notes01/,"notes$NOSERVEUR",$0);print }
                            else { print $0 }
                         }' `

i need to have :
CMD2= "/users/notes03"

i have to use awk and gsub function because of the number of differents CMD possibilities.

thanks in advance
Christian

---------- Post updated at 05:38 PM ---------- Previous update was at 05:32 PM ----------

Well i've tried this with success :

Code:
CMD2=`echo $CMD|awk -v NOSERVEUR="$NOSERVEUR" '{ if ( $0 ~ /notes01/ )
                       { gsub( /notes01/,"notes"NOSERVEUR,$0);print }
                            else { print $0 }
                         }' `

Is there a simple way ?

regards
Christian
# 2  
Old 08-03-2011
Something like this?
Code:
CMD="/users/notes01"
NOSERVEUR=03

case "$CMD" in
  *"notes01")
    CMD2=${CMD%??}$NOSERVEUR
    echo $CMD2;;
  *)
    echo "Something wrong??";;
esac

Last edited by Franklin52; 08-03-2011 at 01:36 PM..
# 3  
Old 08-03-2011
Hi,

Try if next script can work. I think it's simpler.
Code:
$ cat script.sh
#!/usr/bin/env bash

CMD="/users/notes01"
NOSERVEUR=03

echo "${CMD%%[0-9]*}$NOSERVEUR"
$ bash script.sh
/users/notes03

Regards,
Birei
# 4  
Old 08-04-2011
Thanks for your help

my request was just an exemple

the input is CMD="/users/notes01"
but could be also CMD="/users/notes01/dir1"

and i want to convert it with a variable to

CMD2="/users/notes02/dir1"
or
CMD2="/users/notes03/dir1"
etc.

if the input is

CMD="/users/notes01/dir1"
i will have
CMD2="/users/notes02/dir1"
or
CMD="/users/notes02/dir1"
then
CMD2="/users/notes01/dir1"

that's why i use the awk statement and gsub function with 2 variables

but the following doesn't work:

Code:
   CMD2=`echo $CMD|awk -v NOSERVEUR="$NOSERVEUR" -v NUM="$NUM" '{ if ( $0 ~ /"notes$NUM"/ )
                      { gsub( /"notes$NUM"/,"notes"NOSERVEUR,$0);print }
                         else { print $0 }
                      }' `



somedoy can help ? Smilie
thanks
# 5  
Old 08-04-2011
Hi,

Try next bash script:
Code:
$ cat script.sh
#!/usr/bin/env bash

CMD="/users/notes01"
CMD2="/users/notes02/dir1"
NOSERVEUR=03


function change_notes {
        echo "$1 -> ${1/notes[0-9][0-9]/notes$2}"
}


change_notes $CMD $NOSERVEUR
change_notes $CMD2 $NOSERVEUR
$ bash script.sh
/users/notes01 -> /users/notes03
/users/notes02/dir1 -> /users/notes03/dir1

Regards,
Birei
# 6  
Old 08-04-2011
Code:
echo $CMD | awk '{gsub("[0-9]","");print $0v}' v=$NOSERVER

# 7  
Old 08-05-2011
Thanks to try to help me but , i think i'm not clear.

There are 2 variables in input , if i say the input is :
/users/notes01/dir1

in fact it is :
/users/notes$NUM/dir1

so in a script i say:
NUM="01"
NOSERVEUR="02"
replace NUM by NOSERVEUR

or later

NUM="02"
NOSERVEUR="03"
replace NUM by NOSERVEUR

this is why i try the awk with 2 variables.
With only one it works.

regards
Christian
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