No sé por qué narices hay que indicar "BEGIN" a #gawk para que acepte el separador de campos desde el primer registro 😠

#awk #gnu

Most #awk users know that a pattern without an explicit action defaults to a print action, and an action without a pattern matches every input line.

But BEGIN/END don't seem to be treated as patterns, so

$ … | awk END

bails out rather than behaving like `… | tail -1`, complaining that END *requires* an action block, rather than defaulting to the print action.

#TIL

Lua has many dialects, and I love them all ❤️
But how to write one lua-file and target them all?
Answer: metaprogramming

Here's a small ~700 bytes gpp-ish metaprogramming awk script 🎉

#lua #teal #nelua #redbean #esp32 #wasm #love2D #awk

ps. its not limited to lua  

https://codeberg.org/coderofsalvation/meta.awk

Friendship ended with #awk
Now #tcl is my best friend

I like its way of doing control flow by passing quoted commands rather than a block of actual commands itself. Looks like a poor man's metaprogramming (or something i'd implement in a Lisp with no distinction between macros and procedures or with a call-by-name/on-demand evaluation of procedures).
Am gonna use it for large scripts and prototyping.

TIL: True modular math in C/C++/Awk is not a thing (at least not with % operator):

In Python & Lua:
print((9-200) % 255)
gives me 64

In gforth:
9 200 - 255 MOD
gives me 64

Ada:
Put((9 - 200) mod 255); New_Line;
gives me 64

But.... In awk and C/C++:
printf("%d\n", (9-200) % 255);
gives me -191

Apparently, in C/Awk/C++ given. a % b, if a or b are negative, all bets are off.

#c #awk #python #forth #adalang

Been cooking up these scripts the last few days to help properly maintain a #linux #kernel #fork written in #AWK and #bash. It only deals with pruning system calls right now, so theres quite a bit more work to do.

https://codeberg.org/m2rad0/splinter

#linuxkernel

Charts in Markdown? Jetzt isser bekloppt geworden ;-) Viel Spaß beim Lesen wie ich in Markdown deterministische Piecharts in meinem ISMS Dokumenten-Workflow baue.

https://blog.jakobs.systems/blog/20260414-charts-in-markdown/

#Markdown #ISMS #pandoc #LaTeX #Charts #Dashboards #Workflow #bash #awk