Shell Programming and Scripting

Hi. I'm a complete noob when it comes to scripting. I have approximately 2000 files scattered throughout different locations that I need to rename. The current files have a character, "." , that needs to be replaced with an underscore. I have no clue which route to go about correcting this. Ideally, I could run the script from the root directory and it search & correct the entire drive. Any assistance in the matter is greatly appreciated! Thanks in advance.

Give an example of what the filenames are, is there anything that will identify the filenames?
If you are just looking for files containing a dot, you might run into problems with false positive.

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Give an example of what the filenames are, is there anything that will identify the filenames?
If you are just looking for files containing a dot, you might run into problems with false positive.

You can try this

Code:

for i in *.sh; do mv "$i" "${i/.sh}"_sh; done

An example would be: A-12345.123.jpg

These need to be changed from A-12345.123.jpg to A-12345_123.jpg

Thanks.

Try this :

Code:

for i in *.jpeg*
do
first_part=$(echo "${i}" | cut -d. -f1)
second_part=$(echo "${i}" | cut -d. -f2)
mv "$i" "${first_part}_${second_part}"
done