Changing my shell bash script default $PWD to it's (the script's) current location

Question

Hey I'm running my shell script that interacts with folders and files, but my $PWD that it keeps pointing to /home/MyUserName directory and this messes with what it is supposed to do. I am running Linux 4.4.8-300.fc23.x86_64 GNU/Linux:

#!/usr/bin/bash -x

clear
ls $PWD

#Check Root
echo checking Root user
if [ $EUID -ne 0 ]
then
    sudo su
fi;

#Check internet availablity
TEST=$(ping -c 1 74.125.21.14|wc -l)
if [ $TEST -gt 5 2>&1 ]
then
    sudo dnf install gcc kernel-devel binutils cpp glibc-devel glibc-headers isl kernel kernel-headers libmpc
else
    echo "No Internet Connection Available! Installing RPMs manuely."
    arr=(*.rpm)
    for (( i=0; i<${#arr[@]}; i++ ));
    do
        echo " ${arr[$i]} "
        dnf -y install ${arr[$i]}
    done
fi;

# Get Network Ability

echo "Starting the setup of your laptop's wireless card."
if [ -d ./MyWirelessCard ]
then
    FILE=./MyWirelessCard/fedora23_broadcom_wl_install.sh
    uname1=" $( stat -c "%u" $FILE ) "
    [ " $USERNAME1 = 1000" ] || chown 1000 $FILE
    [ " -r -w -x $FILE " ] || chmod +rwx $FILE
else
    mkdir ./MyWirelessCard
    FILE=./MyWirelessCard/fedora23_broadcom_wl_install.sh
    uname1=" $( stat -c "%u" $FILE ) "
    [ " $USERNAME1 = 1000" ] || chown 1000 $FILE
    [ " -r -w -x $FILE " ] || chmod +rwx $FILE
fi;

#Making wireless card installer run on boot
#echo "Making the wireless card install script run on boot"
#ln -s ./MyWirelessCard/fedora23_broadcom_wl_update.sh /etc/init.d/
#ln -s ./MyWirelessCard/fedora23_broadcom_wl_update.sh /etc/rc.d/

# Initial Update

echo "Preforming initial system update."
dnf -y update

#Exit

echo Script is finished
exit

I get:

• ls /home/MyUserName Contents Of Folder
• echo checking Root user checking Root user
• '[' 1000 -ne 0 ']'
• sudo su [sudo] password for MyUserName: ++ ping -c 1 74.125.21.14 ++ wc -l
• TEST=6
• '[' 6 -gt 5 ']'
• sudo dnf install gcc kernel-devel binutils cpp glibc-devel glibc-headers isl kernel kernel-headers libmpc [sudo] password for dcarr:
• echo 'Starting the setup of your laptop'\''s wireless card.' Starting the setup of your laptop's wireless card.
• '[' -d ./MyWirelessCard ']'
• mkdir ./MyWirelessCard
• FILE=./MyWirelessCard/fedora23_broadcom_wl_install.sh ++ stat -c %u ./MyWirelessCard/fedora23_broadcom_wl_install.sh stat: cannot stat ‘./MyWirelessCard/fedora23_broadcom_wl_install.sh’: No such file or directory
• uname1=' '
• '[' ' = 1000' ']'
• '[' ' -r -w -x ./MyWirelessCard/fedora23_broadcom_wl_install.sh ' ']'
• echo 'Preforming initial system update.' Preforming initial system update.
• dnf -y update Error: This command has to be run under the root user.
• echo Script is finished Script is finished
• exit

I am at a loss any help would be greatly appreciated.

Answer 1

You'd have to actually change directories in your script. Typically:

cd "$(dirname "$0")"