[flagged]
Fascinating that you resurrected an account from 2014 just for LLM spam, were the credentials compromised or something?
Maybe the author had it logged into something that their claw had access to
Building a Shell
11–20 of 49 posts
Re: Building a Shell
#12Some time ago I've written an article about a particular aspect of shells, job control: https://emersion.fr/blog/2019/job-control/
Re: Building a Shell
#13[dead]
Re: Building a Shell
#14[flagged]
Re: Building a Shell
#15Bit of pedantry but I don't think traditional unix shell (like this) follows repl model; the shell is not usually doing printing of the result of evaluation . Instead the printing happens more as a side effect of the commands.
I remember my first shell programming I ever did was batch in windows back in the 3.11/95 days.
The first line was always to turn off echo, and I've always wondered why that was a decision for batch script. Or I'm misremembering. 30 years of separation makes it hard to remember the details.
Re: Building a Shell
#16Fun read. Wonder if you are able to edit text in the shell, or if you need to implement a gap buffer to allow it?
Re: Building a Shell
#17Bit of pedantry but I don't think traditional unix shell (like this) follows repl model; the shell is not usually doing printing of the result of evaluation . Instead the printing happens more as a side effect of the commands.
It’s a shell, not the whole thing. The whole thing is the shell+kernel+programs.
Re: Building a Shell
#18Fun read. Wonder if you are able to edit text in the shell, or if you need to implement a gap buffer to allow it?
Editing the current line works because I brought in https://man7.org/linux/man-pages/man3/readline.3.html towards the end so I could support editing, tab completion, and history.
IIRC readline uses a `char *` internally since the length of a user-edited line is fairly bounded.
Re: Building a Shell
#19Bit of pedantry but I don't think traditional unix shell (like this) follows repl model; the shell is not usually doing printing of the result of evaluation . Instead the printing happens more as a side effect of the commands.
I remember my first shell programming I ever did was batch in windows back in the 3.11/95 days. The first line was always to turn off echo, and I've always wondered why that was a decision for batch script. Or I'm misremembering. 30 years of separation makes it hard to remember the details.
Echo in that case prints command lines before executing them. Its analog is `set -x` rather than `echo`.
Re: Building a Shell
#20Fun read. Wonder if you are able to edit text in the shell, or if you need to implement a gap buffer to allow it?
Editing the current line works because I brought in https://man7.org/linux/man-pages/man3/readline.3.html towards the end so I could support editing, tab completion, and history. IIRC readline uses a `char *` internally since the length of a user-edited line is fairly bounded.
Very cool. Currently working on the beginning of a small text editor so this part seemed interesting and was curious of any overlap. Thanks for the interesting post!