diff --git a/Upload to imgs b/Upload to imgs
index 961860c..842fb81 100755
--- a/Upload to imgs	
+++ b/Upload to imgs	
@@ -1,38 +1,32 @@
-#!/usr/bin/env bash
-# This is an imgs <https://gitea.gch.icu/ge/imgs> "integration" for Nautilus.
+#!/bin/sh
+# This is an imgs https://git.nxhs.cloud/ge/imgs "integration" for Nautilus.
 # Place this script into path: $HOME/.local/share/nautilus/scripts
 # See more info at: <https://help.ubuntu.com/community/NautilusScriptsHowto>
 
-imgs_check_vars() {
-    [ "$IMGSLOG" ] || IMGSLOG=$HOME/imgs_debug.log
-    [ "$IMGSREMOTE" ] && return 0  # exit from func if variable is set
+IMGSLOG="${IMGSLOG:-$HOME/imgs_debug.log}"
+[ -n "$IMGSREMOTE" ] && return 0  # exit from func if variable is set
 
-    if [ -f "$HOME/.imgsremote" ]; then
-        . $HOME/.imgsremote
-    fi
+if [ -f "$HOME"/.imgsremote ]; then
+    # shellcheck source=/dev/null
+    . "$HOME"/.imgsremote
+fi
 
-    if [ "$IMGSREMOTE" ]; then
-        :
-    else
-        echo "$0: Error: IMGSREMOTE variable is not set." >&2
-        exit 1
-    fi
-}
+if [ -z "$IMGSREMOTE" ]; then
+    echo "$0: Error: IMGSREMOTE variable is not set." >&2; exit 1
+fi
 
-imgs_check_vars
+[ -n "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Started" >> "$IMGSLOG"
 
-[ "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Started" >> "$IMGSLOG"
-
-while read -r file; do
-    [ "$file" ] || break
-    if [ "$IMGSDEBUG" ]; then
+echo "$NAUTILUS_SCRIPT_SELECTED_FILE_PATHS" | while read -r file; do
+    [ -z "$file" ] && break
+    if [ -n "$IMGSDEBUG" ]; then
         image="$(curl -v -L -F "image=@$file" "$IMGSREMOTE" 2>&1 | tee -a "$IMGSLOG")"
-        image="$(tail -n 1 <<< "$image")"
+        image="$(echo "$image" | tail -n 1)"
     else
         image="$(curl -L -F "image=@$file" "$IMGSREMOTE")"
     fi
-    [ "$IMGSDEBUG" ] && echo "$(date +"[%d %b %Y %H:%M:%S]") $file --> $image" >> "$IMGSLOG"
+    [ -n "$IMGSDEBUG" ] && echo "$(date +"[%d %b %Y %H:%M:%S]") $file --> $image" >> "$IMGSLOG"
     notify-send "File uploaded to imgs!" "$image"
-done <<< "$NAUTILUS_SCRIPT_SELECTED_FILE_PATHS"
+done
 
-[ "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Finished" >> "$IMGSLOG"
+[ -n "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Finished" >> "$IMGSLOG"
diff --git a/imgs b/imgs
index 3ddd3a2..6c1e3bf 100755
--- a/imgs
+++ b/imgs
@@ -1,74 +1,74 @@
-#!/usr/bin/env bash
-# imgs CLI client.
-# Home page: <https://gitea.gch.icu/ge/imgs>
+#!/bin/sh
+# imgs CLI https://git.nxhs.cloud/ge/imgs
 
 imgs_usage() {
-	cat <<- EOF
-	Upload images to remote imgs server.
+cat <<- EOF
+Upload images to remote imgs server.
 
-	Usage: imgs [--version] [--help] [-r | --remote <URL>] <file>...
+Usage: imgs [-rvh] <file>...
 
-	Options:
-	    -r, --remote    remote imgs instance URI. Example:
-	                    'https://user:password@example.org'
-	    --version       print version and exit.
-	    --help          print this help message and exit.
+Options:
+    -r, --remote    remote imgs instance URI e.g. https://user:password@example.org
+    -v, --version   print version and exit.
+    -h, --help      print this help message and exit.
 
-	Environment variables:
-	    IMGSREMOTE      remote imgs instance URI.
-	    IMGSDEBUG       enables verbose mode and logging.
-	    IMGSLOG         path to logfile. Default: ~/imgs_debug.log
+Environment variables:
+    IMGSREMOTE      remote imgs instance URI.
+    IMGSDEBUG       enables verbose mode and logging.
+    IMGSLOG         path to logfile. Default: ~/imgs_debug.log
 
-	You can set variables in ~/.imgsremote file instead of ~/.bashrc
-	See <https://gitea.gch.icu/ge/imgs> for more info.
-	EOF
-    exit 0
+You can set variables in ~/.imgsremote file instead of ~/.bashrc
+See <https://git.nxhs.cloud/ge/imgs> for more info.
+EOF
 }
 
-imgs_check_vars() {
-    [ "$IMGSLOG" ] || IMGSLOG=$HOME/imgs_debug.log
-    [ "$IMGSREMOTE" ] && return 0  # exit from func if variable is set
+[ "$#" -eq 0 ] && { imgs_usage; exit 1; }
 
-    if [ -f "$HOME/.imgsremote" ]; then
-        . $HOME/.imgsremote
-    fi
-
-    if [ "$IMGSREMOTE" ]; then
-        :
-    else
-        echo "$0: Error: IMGSREMOTE variable is not set." >&2
-        exit 1
-    fi
-}
-
-[[ "$@" ]] || imgs_usage
-while (( "$#" )); do
-    case "$1" in
-        -r|--remote) if [ "$2" ] && [ "${2:0:1}" != '-' ]; then
-                        IMGSREMOTE="$2"; shift
-                     else
-                        echo "$0: missing argument for $1" >&2; exit 1
-                     fi; shift;;
-        --version) echo 'imgs CLI 1.0'; exit 0;;
-        --help) imgs_usage;;
-        -*) echo "$0: $1: bad option" >&2; exit 1;;
-        *) [ -f "$1" ] || { echo "$0: $1: no such file" >&2; exit 1; }
-            _files+=("$1"); shift;;
+# Transform long options to short ones
+for arg in "$@"; do
+    shift
+    case "$arg" in
+        --remote) set -- "$@" "-r";;
+        --help) set -- "$@" "-h";;
+        --version) set -- "$@" "-v";;
+        *) set -- "$@" "$arg";;
     esac
 done
 
-imgs_check_vars
+while getopts r:vh OPT; do
+    case "$OPT" in
+        r) IMGSREMOTE="$OPTARG";;
+        v) echo 'imgs CLI 1.1'; exit 0;;
+        h) imgs_usage; exit 0;;
+        *) echo "$0: Unknown option: $OPT" >&2; exit 1;;
+    esac
+done
 
-[ "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Started" | tee -a "$IMGSLOG"
+shift $((OPTIND - 1))  # shift for parse positional args
 
-for file in "${_files[@]}"; do
+# Check variables
+IMGSLOG="${IMGSLOG:-$HOME/imgs_debug.log}"
+[ -n "$IMGSREMOTE" ] && return 0  # exit from func if variable is set
+
+if [ -f "$HOME"/.imgsremote ]; then
+    # shellcheck source=/dev/null
+    . "$HOME"/.imgsremote
+fi
+
+if [ -z "$IMGSREMOTE" ]; then
+    echo "$0: Error: IMGSREMOTE variable is not set." >&2; exit 1
+fi
+
+[ -n "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Started" | tee -a "$IMGSLOG"
+
+for file in "$@"; do
     filepath="$(realpath "$file")"
-    if [ "$IMGSDEBUG" ]; then
-        echo "Uploading $filepath" | tee -a "$IMGSLOG"
+    if [ -n "$IMGSDEBUG" ]; then
+        echo "Uploading $filepath ..." | tee -a "$IMGSLOG"
         curl -v -L -F "image=@/$filepath" "$IMGSREMOTE" 2>&1 | tee -a "$IMGSLOG"
     else
         curl -L -F "image=@/$filepath" "$IMGSREMOTE"
     fi
 done
 
-[ "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Finished" | tee -a "$IMGSLOG"
+[ -n "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Finished" | tee -a "$IMGSLOG"