OLDDIR=$(pwd)
machine=$(uname -m)
-if echo $machine | egrep -q 'aarch64|arm64'; then
+if echo $machine | grep -E -q 'aarch64|arm64'; then
TOOLDIR=aarch64
-elif echo $machine | egrep -q 'x86_64|amd64'; then
+elif echo $machine | grep -E -q 'x86_64|amd64'; then
TOOLDIR=x86_64
-elif echo $machine | egrep -q 'mips64'; then
+elif echo $machine | grep -E -q 'mips64'; then
TOOLDIR=mips64el
-elif echo $machine | egrep -q 'i[3-6]86'; then
+elif echo $machine | grep -E -q 'i[3-6]86'; then
TOOLDIR=i386
else
echo "Unsupported machine type $machine"
DISK=${DISK:0:-1}
fi
-if echo $DISK | egrep -q "/dev/nvme|/dev/mmcblk/dev/nbd"; then
+if echo $DISK | grep -E -q "/dev/nvme|/dev/mmcblk/dev/nbd"; then
if echo $DISK | grep -q "p[1-9]$"; then
DISK=${DISK:0:-2}
fi