Only keep filename (crop directories)

There's a script I didn't make that does

printf 'to copy: %s\n' "$src"

and $src is the full path. What's the way to output only the filename (thus crop directories (ie crop the last '/' and everything before)) that take the least processing, or close to?

Thank you kindly

basename is the command you want.

Originally Posted by jmgibson1981 basename is the command you want.

The script does more than only what's in the OP and I assume if I did basename instead of however the file names are currently fetch (full path) that it would break the script.

You will need to post more than a single line of a script for help more specific.

Originally Posted by jmgibson1981 more than a single line of a script

#!/bin/bash -

if (($# < 2)); then
  printf 'usage: %s SOURCE_DIR DEST_DIR\n' "$9"
  exit 1
fi

shopt -s nullglob dotglob globstar

src_dir=$1 dst_dir=$2

for src in "$src_dir"/**/*; do
    [[ ! -L $src && -f $src ]] \
        || continue
    dst=$dst_dir/${src#"$src_dir"/}

    if
        [[ ! -e $dst ]] || {
            [[ -f $dst ]] &&
            src_size=$(stat -c %s -- "$src") &&
            dst_size=$(stat -c %s -- "$dst") &&
            [ "$src_size" -gt "$dst_size" ]
        }
    then
        printf 'to copy: %s\n' "$src"
        cp -- "$src" "$dst"
    fi
done

${src#"$src_dir"/}

This chops from the left end.
It chops the leading common directory (start directory).
The following chops from the left end, and lets the * expand to the maximum (## not # where * expands to the minimum).

${src##*/}

Following your clue, I did a small change doing what I want which I highlighted in red what's moved and in green what's added/modified:

#!/bin/bash -

if (($# < 2)); then
  printf 'usage: %s SOURCE_DIR DEST_DIR\n' "$9"
  exit 1
fi

shopt -s nullglob dotglob globstar

src_dir=$1 dst_dir=$2

for src in "$src_dir"/**/*; do
    [[ ! -L $src && -f $src ]] \
        || continue
    src_name=${src#"$src_dir"/}
    dst=$dst_dir/$src_name

    if
        [[ ! -e $dst ]] || {
            [[ -f $dst ]] &&
            src_size=$(stat -c %s -- "$src") &&
            dst_size=$(stat -c %s -- "$dst") &&
            [ "$src_size" -gt "$dst_size" ]
        }
    then
        printf 'to copy: %s\n' "$src_name"
        cp -- "$src" "$dst"
    fi
done

You have shortened the printout,
and kept the full path for the cp.
Well done!

Originally Posted by MadeInGermany You have shortened the printout, and kept the full path for the cp. Well done!

if that is what DynV wanted, then he should be happy. he didn't make it clear to me.