add untar

.bash_aliases

@@ -39,12 +39,39 @@ alias j='jobs -l'
 
 
 # utils
+alias sha='shasum -a 256'
+alias getpass="openssl rand -base64 12"
 alias diff='colordiff'
 alias mount='mount | column -t'
 alias start_bt='sudo systemctl start bluetooth'
 alias upgrade_all='sudo apt update && sudo apt upgrade'
 alias tar-it='tar -czf "../${PWD##*/}.tar.gz" .'
 
+# extract tar archive in ./archive_name directory
+untar() {
+
+    if ! [ -f $1 ]; then
+        echo "\033[0;31merror: file '$1' not found\e[m" >&2
+        return 1  # exit code
+    fi
+
+    dir_name="$(basename $1 | cut -d. -f1)"
+
+    if [ -d $dir_name ]; then
+        echo "\033[0;31merror: directory '$dir_name' exists\e[m" >&2
+        return 1  # exit code
+    fi
+
+    if [ -f $dir_name ]; then
+        echo "\033[0;31merror: file '$dir_name' exists\e[m" >&2
+        return 1  # exit code
+    fi
+
+    mkdir $dir_name 1>/dev/null
+    tar -C $dir_name -xf $1 && return 0
+}
+
+
 
 # time
 alias now='date +"%T"'
@@ -57,3 +84,10 @@ alias vis='vim "+set si"'
 
 # net
 alias ports='netstat -tulanp'
+alias wget='wget -c'
+alias ping='ping -c 5'
+
+# starts web server
+alias www='python3 -m http.server 8000'
+
+alias myip='curl ipinfo.io/ip'