CODEWITHSUNDEEP
shellgrep
Daniel
Daniel

Reputation: 2726

How to read user defined dictionary using shell scripts?

Say I have a BCFile having the following contents:

inlet
{
    type            fixedValue;
    value           uniform (5 0 0);
}
outlet
{
    type            inletOutlet;
    inletValue      $internalField;
    value           $internalField;
}
....
blahblahblah (other boundary condition with the same dictionary format as above)

In order to print out the type of outlet boundary condition, that is inletOutlet, I thought I could use,

cat BCFile | grep "type" | awk '{printf $2}'  | tr -d ";"

But the problem now is in using grep there are so many type keyword appeared. So is there a way to first detect the word outlet, then search and grep the contents between {}? Thanks!

Upvotes: 0

Views: 340

Answers (2)

Joni
Joni

Reputation: 111239

AWK is pretty powerful. For example if you set the record separator to } each block becomes a record of its own. Then you just print the matching record:

$ awk -v RS='}' '/outlet/ { print $0 }' file
outlet
{
    type            inletOutlet;
    inletValue      $internalField;
    value           $internalField;

Upvotes: 1

bsmoo
bsmoo

Reputation: 1049

How about grep -A 5 'outlet' BCFile | grep 'type' | awk '{printf $2}' | tr -d ";"

Upvotes: 0

Related Questions