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Shell Programming and Scripting

Change specific occurence with sed

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# 8  
Old 05-17-2010
Another approach Smilie:
Code:
awk -F"=" -v var="6677" -v count ="3" '
/\[Sdp]\/{count++}
/^port/ && count==3 {$2=var}
1' OFS="=" file

# 9  
Old 05-17-2010
MySQL
Code:
sed '/\[Sdp\]/{;n;n; s/port=2233/port=6677/;p;d;q}' file

# 10  
Old 05-18-2010
Thx all for your responses, but ygemici, I tried yours and it returns an error for me ...

Code:
$ sed '/\[Sdp\]/{;n;n; s/port=2233/port=6677/;p;d;q}' inputfile
sed: command garbled: /\[Sdp\]/{;n;n; s/port=2233/port=6677/;p;d;q}

I'm using a :
SunOS 5.10 Generic_118833-36 sun4u sparc SUNW,Sun-Fire-V240

Regs,
# 11  
Old 05-18-2010
The solution from ygemici is missing a semi-colon:

Code:
sed '/\[Sdp\]/{;n;n; s/port=2233/port=6677/;p;d;q;}'

In any case it assumes that the port is the third line after the [Std] tag and that the value of port is fixed.
# 12  
Old 05-18-2010
ok, thx a lot scottn ...
# 13  
Old 05-19-2010
Quote:
Originally Posted by scottn
The solution from ygemici is missing a semi-colon:

Code:
sed '/\[Sdp\]/{;n;n; s/port=2233/port=6677/;p;d;q;}'

In any case it assumes that the port is the third line after the [Std] tag and that the value of port is fixed.
Hmm I forgot it but it isnt necessity gnu sed which i use Smilie
I think SunOS sed v4.1 or SunOS sed v5.6 is needed


Code:
[root@rhnserver ~]# cat yap
[Batch]
aaa
port=1234
time
[Sdp]
bbb
port=2233
name
[Ivr]
ccc
port=4444
name

Code:
[root@rhnserver ~]# sed '/\[Sdp\]/{;n;n; s/port=2233/port=6677/;p;d;q}' yap
[Batch]
aaa
port=1234
time
[Sdp]
bbb
port=6677
name
[Ivr]
ccc
port=4444
name
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