diff --git a/README.md b/README.md
index 83fa829..fa0bc0b 100644
--- a/README.md
+++ b/README.md
@@ -12,18 +12,21 @@ POSIX-compliant console, with BASH, GNU utils, GNU Privacy Guard and oathtool av
 
 Just place mytotp.sh somewhere within your $PATH, check is +x attribute present.
 
+Then add `source mytotp.sh` to your .bashrc or .zshrc to have all functions available, this way you get `mytotp` for generating, `mytotpadd` for adding and `mytotplist` for listing.
+
 Create a direcrory for TOTP keys `mkdir -p ~/.config/mytotp`
 
 If you have no suitable GPG key for encrypting of TOTP keys, create it
-`gpg --yes --batch --passphrase 'Some-words' --quick-generate-key "My TOTP"`
+`gpg --yes --batch --passphrase-fd 0 --quick-generate-key 'My TOTP'`
+enter your passphrase hit Enter, check keys with 
+`gpg --list-secret-keys` 
 
 ## Usage
 
-When you activate 2FA on some service, get TOTP key string, copy it into buffer, then `gpg -e -r "My TOTP" >~/.config/mytotp/SERVID.gpg`, paste string, press Enter and Crtl+D.
+When you activate 2FA on some service, get TOTP key string, copy it into buffer, then, assuming SERVID is a name you want to give to service `mytotpadd SERVID`, paste string, press Enter and Crtl+D .
 
 For getting TOTP code for this service do `mytotp.sh SERVID`, unlock your GPG key with above passphrase, then wait for 6-digit code (for your convenience script will wait for next 30 second interval before generating, so you will have a maximum of 30 seconds time for use it).
 
 ## Afterword
 
-I wrote this script for my own usage, trying to keep a balance between simplicity and usability. So anyone can try to use it, or modify for it's own needs.
-
+I wrote this script for my own usage, trying to keep a balance between simplicity and usability. So anyone can try to use it, or modify for it's own needs.
\ No newline at end of file
diff --git a/mytotp.sh b/mytotp.sh
index 514ffb9..88c4454 100755
--- a/mytotp.sh
+++ b/mytotp.sh
@@ -1,36 +1,78 @@
-#!/bin/bash
-#
-# Put TOTP key for service SERVID to GPG file crypted for 'My TOTP'
-#  gpg -e -r 'My TOTP' > ~/.config/mytotp/SERVID.gpg
+# this code is a fork of https://github.com/ThingCrimson/mytotp
+# put this file in path and source it in .bashrc or .zshrc
+# add next line to .bashrc or .zshrc
+# source mytotp.sh
+# create a directory for the keys ~/.config/mytotp
+# usage, mannually creating SERVID.gpg file:
+# Put TOTP key for service SERVID to GPG file crypted for '\''My TOTP'\''
+# gpg -e -r '\''My TOTP'\'' > ~/.config/mytotp/SERVID.gpg
+# usage, getting TOTP for service SERVID:
+# mytotp SERVID
+# usage, adding new SERVID:
+# mytotpadd SERVID
+# usage, listing all SERVIDs:
+# mytotplist
+function mytotp() {  
+    if ! command -v oathtool &> /dev/null
+  then
+    echo "oathtool could not be found"
+    echo "Please install it with: brew install oath-toolkit"
+    return 1
+  fi
 
-KEYDIR=~/.config/mytotp
-KEYEXT=.gpg
-SERVID=$1
+  KEYDIR=~/.config/mytotp
+  KEYEXT=.gpg
+  SERVID=$1
+
+  if [ -z "${SERVID}" ] ; then
+    echo -e "Usage: $0 SERVID\n\tSERVID is a service ID, abbreviated, w/o ext:"
+    find ${KEYDIR}/*${KEYEXT} | sed -e 's/\/home.*\//  /; s/\.gpg//'
+    return 2
+  fi
+
+  if [ ! -f "${KEYDIR}/${SERVID}${KEYEXT}" ] ; then
+    echo "No key for ${KEYDIR}/${SERVID}${KEYEXT}"
+    return 1
+  fi
 
-if [ -z "${SERVID}" ] ; then
-  echo -e "Usage: $0 SERVID\n\tSERVID is a service ID, abbreviated, w/o ext:"
-  find ${KEYDIR}/*${KEYEXT} | sed -e 's/\/home.*\//  /; s/\.gpg//'
-  exit 2
-fi
 
-if [ ! -f "${KEYDIR}/${SERVID}${KEYEXT}" ] ; then
-  echo "No key for ${KEYDIR}/${SERVID}${KEYEXT}"
-  exit 1
-fi
 
-SKEY=$(gpg -d --quiet "${KEYDIR}/${SERVID}${KEYEXT}")
+  SKEY=$(gpg -d --quiet "${KEYDIR}/${SERVID}${KEYEXT}")
 
-NOWS=$(date +'%S')
-WAIT=$((60 - NOWS))
-if [ ${WAIT} -gt 30 ]; then
-  WAIT=$((WAIT - 30))
-fi
-echo -n "Seconds :${NOWS} (wait ${WAIT}) ... "
-sleep ${WAIT}
+  NOWS=$(date +'%S')
+  WAIT=$((60 - NOWS))
+  if [ ${WAIT} -gt 30 ]; then
+    WAIT=$((WAIT - 30))
+  fi
+  echo -n "Seconds :${NOWS} (we need to wait ${WAIT}) ... "
+  sleep ${WAIT}
 
-TOTP=$(echo "${SKEY}" | oathtool -b --totp - )
+  TOTP=$(echo "${SKEY}" | oathtool -b --totp - )
 
-echo "${TOTP}"
-SKEY="none"
+  echo "${TOTP}"
+  SKEY="none"
+  return 0
+}
 
-exit 0
+# add new SERVID to GPG file in ~/.config/mytotp/SERVID.gpg
+# paste the key in the prompt and press enter, then $SERVID.gpg will be created
+function mytotpadd() {
+  # if no $1 supplied, exit
+  if [ -z "$1" ] ; then
+    echo -e "Usage: $0 SERVID\n\tSERVID is a service ID, abbreviated, w/o ext:"
+    return 1
+  fi
+  KEYDIR=~/.config/mytotp
+  KEYEXT=.gpg
+  SERVID=$1
+  # print user instruction about press control-D to stop gpg"
+  echo "Paste the key in the prompt, press enter, and then press control-D to stop gpg"
+  gpg -e -r "My TOTP" >~/.config/mytotp/$SERVID.gpg
+}
+
+# function to list all SERVIDs in ~/.config/mytotp
+function mytotplist() {
+  KEYDIR=~/.config/mytotp
+  KEYEXT=.gpg
+  find ${KEYDIR}/*${KEYEXT} | sed -e 's/\/home.*\//  /; s/\.gpg//'
+}