Ubuntu – Rename all file extension in directory

bashrename

I am new to scripting, and I have a directory with all files named num.pdb.ostat. I would like to rename all num.ostat (that is deleting the .pdb in all). For a single file this works:

mv 2.pdb.ostat 2.ostat

but when I try to do it for all files in folder with this script

for num in ./*; do mv ${num}.pdb.ostat ${num}.ostat; done

nothing happens

Can anyone tell me, where I went wrong?

Best Answer

${num} takes the whole file name. You need to get filename without extension and add your new extension. You can make a string formatting. Use the following command:

for num in ./*; do mv ${num} ${num%.*.*}.ostat ; done

% deletes shortest match of $substring from back of $string.

Related Solutions

Ubuntu – Recursively rename all files whose name starts with a dash

Using find and rename:

find . -iname '-*' -execdir rename -n 's:./-:./:' {} +

find . -iname '-*' matches all filenames beginning with a -, and then -execdir ... {} + runs the command with those filenames as arguments, after cding to the directory containing the files. This means that the command arguments always has filenames of the form ./-foo. Then it's easy to just match the - after the ./ in a regex.

Ubuntu – Find, Duplicate, Rename and Copy to this folder

Here is example script that users find, which output is piped to a while loop:

find "/mnt/TV Shows/" -type f -name "fanart.jpg" | while IFS= read -r item; do
    NAME="${item##*/}"
    echo cp "$item" "/mnt/Wallpapers/Slideshow/${NAME%.*}-$((i++)).${NAME##*.}"
done

Remove echo the do the action.

The name of the destination file will consist of:

${name of source file}-$((sequential number))-${extension of source file}

The numbering will start from 0, because the variable $i has not been pre-initialized. You can put i=1; before find to start numbering from 1.

Here is more complicated bash script that uses the globstart option ** to make recursive search for a file within a folder. If there is a coincidence the file will be be copied to a destination folder. You can choice between different patterns of the destination file name by changing the inner (if-fi) part of the script.

#!/bin/bash

INPUT_PATH="/mnt/TV Shows"
INPUT_FILE_NAME="fanart.jpg"
OUTPUT_PATH="/mnt/Wallpapers/Slideshow"

shopt -s globstar

for item in "${INPUT_PATH}"/**; do
    # If the item is a file and its name is equal to the INPUT_FILE_NAME
    if [[ -f "$item" && "${item##*/}" == "$INPUT_FILE_NAME" ]]; then
        # Compose OUTPUT_FILE name based on the parent directory name
        INPUT_FILE_FULL_PATH="${item%/*}"
        INPUT_FILE_PARENT_DIR="${INPUT_FILE_FULL_PATH##*/}"
        OUTPUT_FILE_NAME="${INPUT_FILE_NAME%.*}-${INPUT_FILE_PARENT_DIR}.${INPUT_FILE_NAME##*.}"
        # Remove 'echo' to execute the command !!!
        echo cp "${item}" "${OUTPUT_PATH}/${OUTPUT_FILE_NAME}"
    fi
done

References:

Best Answer

Related Solutions

Ubuntu – Recursively rename all files whose name starts with a dash

Ubuntu – Find, Duplicate, Rename and Copy to this folder

Related Question