En la primavera de 1978 mientras que Dan Bricklin se sentaba en una de las clases del Máster que se estaba sacando en la Escuela de Empresariales de Harvard (Harvard Business School), se le ocurrió la idea de plasmar de forma electrónica lo que el profesor estaba haciendo en la pizarra. Éste, estaba dibujando una matriz con números en ciertas celdas y operaciones aritméticas en ciertas otras. Es decir, a Bricklin se le acababa de ocurrir la idea de crear una hoja de cálculo electrónica. ...

Since the FCC seems to have no problem with this idea, I’ve (through correspondence) gotten access to the FCC’s internal IP block, and throttled all connections from the FCC to 28.8kbps modem speeds on the Neocities.org front site, and I’m not removing it until the FCC pays us for the bandwidth they’ve been wasting instead of doing their jobs protecting us from the ”keep America’s internet slow and expensive forever” lobby. ...

Otra alternativa para enviar correos electrónicos desde el terminal sin necesidad de tener instalado un servidor de correo. Su configuración es incluso más sencilla que con ssmtp. Si tenemos instalado ssmtp deberemos desinstalarlo para poder instalar msmtp. Instalamos mstmp-mta Instalamos el paquete msmtp-mta desde los repositorios y editamos el fichero de configuración ~/.msmtprc: defaults logfile ~/msmtp.log account gmail auth on host smtp.gmail.com from example@gmail.com auth on tls on tls_trust_file /usr/share/ca-certificates/mozilla/Equifax_Secure_CA.crt user example@gmail.com password secret port 587 account default : gmail Le cambiamos los permisos: ...

The American Standard Code for Information Interchange (ASCII) was developed under the auspices of a committee of the American Standards Association, called the X3 committee, by its X3.2 (later X3L2) subcommittee, and later by that subcommittee’s X3.2.4 working group. The ASA became the United States of America Standards Institute or USASI and ultimately the American National Standards Institute. » Charles Torvalds | askapache.com

Si queremos obtener el listado de rangos de IPs que puedan estar asociadas a un dominio, por ejemplo para bloquearlo, podemos ejecutar: $ IP=$(dig +short www.example.com | grep -Eo '([0-9]{1,3}\.?){4}' | head -1) $ AS=$(whois $IP | awk '/OriginAS/{print $2}') $ test -n "$AS" && whois -h whois.radb.net '!g'$AS | tr -d "\n" | tr " " "\n" | sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4 En la primera línea, obtenemos la IP asociada al dominio. En la segunda, obtenemos el registro origin, el cual utilizamos en la tercera línea para consultar a whois.radb.net el rango de IPs y mostrar las IPs una por línea. ...

The roots of CGI lie in the first mechanical aids to drawing and painting. The earliest of these were developed to help solve a problem every artist has found to be sticky: perspective. Before the introduction of geometric perspective, the realistic depiction of nature was not one of the purposes of art. Instead, artists chose the size and position of objects in a picture by their relative importance to one another. A distant castle might appear to be larger than one in the foreground simply because it was considered more important. ...

I remember my first program, by which I mean one that I cobbled together myself, not simply typing in a complete listing from the manual. I was twelve, the year was 1985, and the computer a Texas Instruments TI-99/4A (a machine which was actually the first 16-bit home computer). My program was a very simple text adventure game, created by chaining together as many IF¦ THEN GOTO statements as I had patience for. ...

Every friend I have with a job that involves picking up something heavier than a laptop more than twice a week eventually finds a way to slip something like this into conversation: ”Bro,1 you don’t work hard. I just worked a 4700-hour week digging a tunnel under Mordor with a screwdriver.” They have a point. Mordor sucks, and it’s certainly more physically taxing to dig a tunnel than poke at a keyboard unless you’re an ant. But, for the sake of the argument, can we agree that stress and insanity are bad things? Awesome. Welcome to programming. ...

Utilizando tg, podemos enviar y recibir mensajes de nuestros contactos en Telegram, incluyéndonos a nosotros mismos, desde el terminal. Envíos programados Combinándolo con expect, conseguiremos una forma sencilla de programar notificaciones. He aquí un pequeño ejemplo: #!/usr/bin/env bash function tg { # First argument, if any, must be the receiver local to="$1" local msg="" local cmd="" if [ $# -gt 1 ]; then shift 1 msg="$@" else while read line; do if [ -z "$msg" ]; then msg=$line else msg="$msg\n$line" fi done if [ -z "$to" ]; then to=$(awk '{print $1}' <<< $msg) msg=$(awk '{$1="";print $0}' <<< $msg) fi fi if [[ $msg =~ "\n" ]]; then file=$(mktemp) echo -e "$msg" > $file cmd="send_text $to $file" else cmd="msg $to $msg" fi #echo $cmd expect -c " log_user 0 match_max 100000 spawn /path/to/telegram -k /path/to/tg-server.pub expect \"User \" send -- \"$cmd\r\" expect \"Sent\" send \"quit\" " } tg $@ Algunos ejemplos de uso: ...

Programming is social, too. Most people think it’s not. With assistance from media portrayals of programmers and sloppy stereotypes of our own, they think most of us would prefer to work alone in the dark. Some do, of course, but even then most programmers I know like to talk shop with other programmers all the time. They like to talk about the places where they are stuck, as well as the places they used to be stuck. War stories are the currency of the programmer community. ...