Bash: any command to replace strings in text files?

Use sed in combination with find. For instance:

find . -name "*.txt" | xargs sed -i s/Coke/Pepsi/g

find . -name "*.txt" -exec sed -i s/Coke/Pepsi/g {} \;

(See the man page on find for more information)

bash shell replace text-processing

Combine sed with find like this:

find . -name "file.*" -exec sed -i 's/Coke/Pepsi/g' {} \;

bash shell replace text-processing

IMO, the tool with the easiest usage for this task is rpl:

rpl -R Coke Pepsi .

(-R is for recursive replacement in all subdirectories)

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