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https://github.com/krishnan-r/a-linux-shell
A prototype linux shell.
https://github.com/krishnan-r/a-linux-shell
Last synced: 3 days ago
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A prototype linux shell.
- Host: GitHub
- URL: https://github.com/krishnan-r/a-linux-shell
- Owner: krishnan-r
- Created: 2018-01-26T14:57:35.000Z (almost 7 years ago)
- Default Branch: master
- Last Pushed: 2018-01-28T20:09:17.000Z (almost 7 years ago)
- Last Synced: 2024-11-09T14:44:07.470Z (about 2 months ago)
- Language: C
- Size: 9.77 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Linux Shell - Operating Systems Lab Assignment
## Features
- Uses GNU Readline for interactive input and history navigation.
- History Management
- History is persisted to disk in ~/.oslab_history
- History expansions and shell builtins.
- Job Management:
- Running multiple jobs in background.
- Killing Jobs based on job numbers
- Common shell builtins found in bash.
- Redirecting standard streams to files.
## Building from source
```
gcc main.c -lreadline -Wall -o shell
```
## Documentation
### Shell Builtins
- exit - quit shell
~~~bash
exit
~~~
- cd - Change directory
~~~bash
cd [directory]
~~~
- jobs - List active jobs
~~~bash
jobs
~~~
- kill - Kill active Job/Process
~~~bash
kill %[jobid]
kill [pid]
~~~
- pwd - Display current directory
~~~bash
pwd
~~~
- type - Check type of command - builtin/executable
~~~bash
type [command]
~~~
- echo
~~~bash
echo Hello World
~~~
- history - List history
~~~bash
history
!! # run previous command
!n # run nth command in history.
!-n # run nth command from end in history.
~~~
- debug - Toggle debug output.
~~~bash
debug
~~~
### Stream Redirection
Redirect stdin/stdout using `>` and `<` operators.
~~~bash
command < infiletxt > outfile.txt
~~~