Inserting text in a file

[ranjit]

My input file contains the following extract:

>>Current file<<
default:
SysVal=1035
Other text....

I would like to insert a line such that:
>>Desired output<<
default:
SysVal=1035
NewVal=33997
Other text....

How do I insert text in a file below a particular search string, in this case SysVal=1035?

Thanks

 

[PHV]

The awk way:
awk '
{print}/SysVal=1035/{print "NewVal=33997"}
' /path/to/currentfile >desiredoutput

Hope This Help, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884

 

[futurelet]

BEGIN{ if (!newval) newval=33997 }

# Print every line.
1
# If line matches, print NewVal.
/^SysVal=1035/ {print "NewVal=" newval}

Save this in file named [tt]insertnewval.awk[/tt]. Run it with
[tt]nawk -f insertnewval.awk inputfile >outputfile[/tt]
(If you don't have nawk, use awk.)
When you want to use a different number for NewVal, do it this way:
[tt]nawk -f insertnewval.awk newval=12345 inputfile >outputfile[/tt]