make polybar scripts more portable

nixos/i3/polybar/cpu-temp.sh

@@ -1,9 +1,11 @@
-#!/bin/sh
-profile="$HOME/.nix-profile/bin/"
-system="/run/current-system/sw/bin/"
+#!/usr/bin/env bash
+sensors=`which sensors`
+egrep=`which egrep`
+cut=`which cut`
+sort=`which sort`
+uniq=`which uniq`
+tail=`which tail`
 
-sensors="$profile/sensors"
-
-max_temp=`$sensors | $system/egrep -o '[0-9][0-9]\.[0-9].*\(' | $system/cut -d' ' -f 1 | $system/sort | $system/uniq | $system/tail -n 1`
+max_temp=`$sensors | $egrep -o '[0-9][0-9]\.[0-9].*\(' | $cut -d' ' -f 1 | $sort | $uniq | $tail -n 1`
 
 echo "${max_temp}"

nixos/i3/polybar/openweathermap-fullfeatured.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 source $HOME/.open-secrets.sh
 
@@ -9,11 +9,12 @@ SYMBOL="°"
 
 API="https://api.openweathermap.org/data/2.5"
 
-CURL="/run/current-system/sw/bin/curl -sf"
-CUT="/run/current-system/sw/bin/cut"
-DATE="/run/current-system/sw/bin/date"
-JQ="$HOME/.nix-profile/bin/jq"
-UNAME="/run/current-system/sw/bin/uname"
+CURL=`which curl`
+CURL="$CURL -sf"
+CUT=`which cut`
+DATE=`which date`
+JQ=`which jq`
+UNAME=`which uname`
 
 get_icon() {
     case $1 in