Trouble with sed and ini file parsing

Shell Programming and Scripting
1

hi people,

i'm having a hard time trying to extract a list of vars delimited by section inside a ini file ...

let's consider this ini file :

; config file
 
[GENERAL]
 
DESC = "channel synchro TGG01"
DMM_VER = DMM23
PATH_FIFO = /users/tgg00/fifo
 
[EMITTER]
 
QRT = BTS01.TGG.01.2
MODE_TRACE = O

now , inside a ksh batch i try to extract vars defined exclusively inside the GENERAL section ... using sed ...

sed -ne '/\[GENERAL\]/,/\[EMITTER\]/ p' < $my_ini_file

with this method the output is :

[GENERAL]
 
DESC = "channel synchro TGG01"
DMM_VER = DMM23
PATH_FIFO = /users/tgg00/fifo
 
[EMITTER]

how can i remove the section names [] from the output ?

thank you for any help !

2

Hi odium74,

One way:

$ sed -ne '/\[GENERAL\]/,/\[EMITTER\]/ { /^\(\[\|\s*$\)/ b ; p }' infile
DESC = "channel synchro TGG01"
DMM_VER = DMM23
PATH_FIFO = /users/tgg00/fifo

Regards,
Birei

3

Another one with awk:

# awk '/^\[GENERAL/ {x=1; next} /^\[/ {x=0} x==1 && !/^[\t ]*$/' infile
DESC = "channel synchro TGG01"
DMM_VER = DMM23
PATH_FIFO = /users/tgg00/fifo
4

hello,

firstly thank you for replying !

i tried your solution, but there must be some kind of syntax problem, or
maybe due to the sed version of my machine ...
i'm using HP-UX B.11.11 ..

sed -ne '/\[GENERAL\]/,/\[EMISSION\]/ { /^\(\[\|\s*$\)/ b ; p }' < $my_ini_file

output error :

sed: There are too many '{'.

any alternative ?

thank you

5

Sorry, I can't help much with that. It works in my system:

$ sed --version | head -1
GNU sed versi�n 4.2.1

I can guess a miss of a ';' just before or after last '}', but it's a shot in the dark. Try it. Else you will have zaxxon's awk solution.

$ sed -ne '/\[GENERAL\]/,/\[EMITTER\]/ { /^\(\[\|[ ]*$\)/ b ; p; };' infile

Regards,
Birei.

6

Since no list has been opened (the opening square brackets are escaped),
no escape is needed for the closing bracket : it is taken as litteral.

When already inside a list, the opening square bracket is taken as litteral so : no escape needed either :slight_smile:

sed -n '/\[GENERAL]/,/\[EMITTER]/ { /^[^[]/ p;}' yourinputfile

# cat tst
hfshfjk
[GENERAL]

DESC = "channel synchro TGG01"
DMM_VER = DMM23
PATH_FIFO = /users/tgg00/fifo

[EMITTER]
lmkmlfds

# sed -n '/\[GENERAL]/,/\[EMITTER]/ { /^[^[]./ p;}' tst
DESC = "channel synchro TGG01"
DMM_VER = DMM23
PATH_FIFO = /users/tgg00/fifo
#