BASH: Abridges & Shortens a FIle Path (e.g. flnm "/some/long/path/to/my/file/location/file.ext" 1 1 will produce "/some/.../location/file.ext")

flnm.sh

# flnm - Breaks apart a file's path by "/" and returns only the number of folder specified for each side,
#        followed by the file name.
#
# usage: flnm <filename> <leading elements> <trailing elements>
#        if <leading elements> is provided and <trailing elements> is omitted, then returns ONLY the back n portions
#        if <leading elements> is provided and <trailing elements> is omitted, then returns ONLY the file nane
#        if <leading elements> + <trailing elements> exceeds the file's actual path length, then returns full file path
#        if both <leading elements> and <trailing elements> are omitted, it assumes a value of 1 for each
#
# examples:
#        flnm "/some/long/path/to/my/file/location/file.ext" 1 1
#        > /some/.../location/file.ext
#
#        flnm "/some/long/path/to/my/file/location/file.ext" 1 2
#        > /some/.../file/location/file.ext
#
#        flnm "/some/long/path/to/my/file/location/file.ext" 2 1
#        > /some/long/.../location/file.ext
#
#        flnm "/some/long/path/to/my/file/location/file.ext"
#        > /some/.../location/file.ext
#
#        flnm "/some/long/path/to/my/file/location/file.ext" 0
#        > file.ext
#
#        flnm "/some/long/path/to/my/file/location/file.ext" 0 0
#        > file.ext
#
#        flnm "/some/long/path/to/my/file/location/file.ext" 1
#        > .../location/file.ext
#
#        flnm "/some/long/path/to/my/file/location/file.ext" 10 20
#        > /some/long/path/to/my/file/location/file.ext

function flnm {
    fileName="$1"
    headCount="$2"
    tailCount="$3"
    pathCount=$(( "$(tr -cd "/" <<< $1 | wc -c)" + 1 ))
    [[ "$2" != "" && "$3" != "" ]] && headCount="$2" && tailCount="$3"
    [[ "$2" != "" && "$3" == "" ]] && tailCount="$2" && headCount=0
    
    [[ "$headCount" == "" ]] && headCount=1
    [[ "$tailCount" == "" || "$tailCount" == "0" ]] && tailCount=1 || tailCount=$(( $tailCount + 1 ))
    totalCount=$(( $headCount + $tailCount ))
    [[ "$pathCount" -le "$totalCount" ]] && echo "$fileName" && return 0

    headName="$(cut -d "/" -f "1-$headCount" <<< $fileName 2>/dev/null)"
    tailName="$(echo "$fileName" | tr "/" "\n" | tail -n${tailCount} | tr "\n" "/")" 
    if [[ "$headName" != "" ]]; then
        echo "$headName/.../${tailName:0:-1}"
    else
        [ ! $tailCount -eq 1 ] && echo ".../${tailName:0:-1}" || echo "${tailName:0:-1}"
    fi
}

Nice and clean!