basename – strip directory from filename

$ basename /var/log/syslog
syslog

$ basename /home/greys/documents/report.pdf
report.pdf

$ basename /home/greys/script.sh .sh
script

$ basename report.pdf .pdf
report

$ basename -a /path/file1.txt /path/file2.txt
file1.txt
file2.txt

$ basename -s .txt /path/file1.txt /path/file2.txt
file1
file2

#!/bin/bash
SCRIPT_NAME=$(basename "$0")
echo "Running: $SCRIPT_NAME"

for file in /data/*.csv; do
    name=$(basename "$file" .csv)
    echo "Processing: $name"
done

for file in *.JPEG; do
    base=$(basename "$file" .JPEG)
    mv "$file" "${base}.jpg"
done

path="/var/log/syslog"

# Remove directory
${path##*/}    # Result: syslog

# Remove extension
filename="report.pdf"
${filename%.*}  # Result: report