How to change the replace the String in sub folders

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# 1  
Old 01-10-2008
How to change the replace the String in sub folders

I have recursive sub directories.
I want to replace particular string in all the files in recursive sub directories.



In above files I want to replace the string "pqr" with "uvw"

Correction in Title: How to replace the string in sub folders

I appreciate your help.

Last edited by bobbygsk; 01-10-2008 at 04:32 PM.. Reason: Wrong Title
# 2  
Old 01-10-2008
find /abc -type f | while read filename
  sed 's/pqr/uvw/g' < $filename > ${filename}.modified
  mv ${filename}.modified $filename    # omit this line if you want to keep both versions

# 3  
Old 01-10-2008
If all the files are have similar names, file1.txt file2.txt, etc:
find /abc -name 'file*.txt -type f |
while read filename
    sed 's/pqr/uvw/g' $filename > tmp.tmp
    mv tmp.tmp $filename

check the output you get from find /abc -name 'file*.txt -type f BEFORE you run the whole script and ruin files you do not want changed.
# 4  
Old 01-10-2008
Gr8. It works.
Thanks for your help Smilie
# 5  
Old 01-10-2008
Thanks Smiling Dragon and jim
# 6  
Old 01-10-2008
Glad to be of help Smilie
# 7  
Old 09-30-2008
I want to replace control m charactes in all the files in recursive sub directories.When executing the below script ,i was getting

"files expression cannot replace with null"
and all files becomming zero byte files.

2.I want to drop recursively currernt directory and sub directories as well because all files are zero byte files .Any suggestions would be appericaited



find ./abc  -name "*"  -type f |while read filename
    sed 's/^M//g' $filename > tmp.tmp
    mv tmp.tmp $filename

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