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grep pls help..

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# 1  
Old 03-14-2005
grep pls help..
Hello,

Iam trying to replace all the occurences of "hai" to all the files recursively and want to replace this by "power hai"

But in the contents there are occurences like $hai, which i dont want to replace.

Can I do the following grep

Quote:
grep '[^A-Za-z]hai[^A-Za-z]' ./
grep '^hai[^A-Za-z]' ./
grep '[^A-Za-z]hai$' ./
but this does not work for me..

Now i have to replace this to power hai..
I hope i can use sed..

Is there any one who can help in this..

Thanks in advance
Esham
# 2  
Old 03-14-2005
$ echo 'hai hail $hai thai hai' > file1
$ perl -pi -e 's/(^|[[:space:]])hai($|[[:space:]])/\1power hai\2/g' file1
$ head file1.bak file1
==> file1.bak <==
hai hail $hai thai hai

==> file1 <==
power hai hail $hai thai power hai
# 3  
Old 03-14-2005
what is your desired output looks like ??
# 4  
Old 03-15-2005
would like to do with shell and not perl..

Quote:
what is your desired output looks like ??
I want to substitue the word "hai" with "power hai" in all the files and files in all the subfolders..recursively.

But there are words like $hai which i want to keep it as it is..since it defined as a variable..

Please help

Esham
# 5  
Old 03-15-2005
bash-2.05$ echo "hai thai haihai $hai"|sed 's/hai/power hai/g'
power hai tpower hai power haipower hai
# 6  
Old 03-15-2005
But that replaced $hai..

Smilie
# 7  
Old 03-15-2005
send the output to a file

bash-2.05$ more abcd.txt
hai $hai $haihai thai $thai bhai $bhai


bash-2.05$ cat abcd.txt|sed 's/^hai/power hai/g'
power hai $hai $haihai thai $thai bhai $bhai
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