WHich command?

[bobthebullet990]

Hi, I have a unix test for a job interview and 2 of the pre-test questions [for revision] I have been given, I don't quite understand!!! ...The questions are:

1. Give a command to change all occurances of wordA to wordB for all files in a directory.

2. Give a command to count the number of lines matching a specified word in a file.

I thought I knew most of the basic UNIX commands, but have never ever come across such a situation when I would have to use either of these! ...Anyone have any ideas? thanks.

[Kieren]

I think number 1 would be 'sed'

[bigtomrodney]

grep -c will count words found.

[cyberinstru]

For replacing wordA to wordB


1. perl -p -i -e s/wordA/wordB/g `find .`

[Kieren]

Problem with that is it will require Perl to be installed

[valan]

sed, or even awk, will do it nicely, check the man or info pages to see how to use them