compatibility: replace pidof with pgrep, set GPG_TTY to $(tty)

bin/mailsync

@@ -14,7 +14,7 @@
 # Run only if user logged in (prevent cron errors)
 pgrep -u "${USER:=$LOGNAME}" >/dev/null || { echo "$USER not logged in; sync will not run."; exit ;}
 # Run only if not already running in other instance
-pidof mbsync >/dev/null && { echo "mbsync is already running."; exit ;}
+pgrep mbsync >/dev/null && { echo "mbsync is already running."; exit ;}
 
 # First, we have to get the right variables for the mbsync file, the pass
 # archive, notmuch and the GPG home.  This is done by searching common profile
@@ -25,7 +25,7 @@ eval "$(grep -h -- \
 	"$HOME/.profile" "$HOME/.bash_profile" "$HOME/.zprofile"  "$HOME/.config/zsh/.zprofile" "$HOME/.zshenv" \
 	"$HOME/.bashrc" "$HOME/.zshrc" "$HOME/.config/zsh/.zshrc" "$HOME/.pam_environment" 2>/dev/null)"
 
-export GPG_TTY=$TTY
+export GPG_TTY="$(tty)"
 
 [ -n "$MBSYNCRC" ] && alias mbsync="mbsync -c $MBSYNCRC" || MBSYNCRC="$HOME/.mbsyncrc"