{"id":21113890,"url":"https://github.com/nyoungstudios/shell-project","last_synced_at":"2026-05-08T11:34:28.254Z","repository":{"id":117257080,"uuid":"275377810","full_name":"nyoungstudios/shell-project","owner":"nyoungstudios","description":"Created a shell interpreter with features similar to ones in bash or csh.","archived":false,"fork":false,"pushed_at":"2020-06-27T14:33:43.000Z","size":1499,"stargazers_count":0,"open_issues_count":0,"forks_count":1,"subscribers_count":1,"default_branch":"master","last_synced_at":"2025-01-21T04:41:37.418Z","etag":null,"topics":["c","cpp","lex","shell","yacc"],"latest_commit_sha":null,"homepage":"","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/nyoungstudios.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2020-06-27T13:28:54.000Z","updated_at":"2020-06-27T14:45:12.000Z","dependencies_parsed_at":null,"dependency_job_id":"908a0d5e-0b22-4d70-9cd7-75d57f46fba3","html_url":"https://github.com/nyoungstudios/shell-project","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/nyoungstudios%2Fshell-project","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/nyoungstudios%2Fshell-project/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/nyoungstudios%2Fshell-project/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/nyoungstudios%2Fshell-project/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/nyoungstudios","download_url":"https://codeload.github.com/nyoungstudios/shell-project/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":243560668,"owners_count":20310967,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["c","cpp","lex","shell","yacc"],"created_at":"2024-11-20T01:59:26.554Z","updated_at":"2026-05-08T11:34:23.231Z","avatar_url":"https://github.com/nyoungstudios.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# My Shell Project\nMy shell project that I created for the Systems Programming class at Purdue. Got over 100% on this project.\n\n## Features\n1. Features specified in the handout that work.  \nEverything works including:  \nParsing and executing commands  \nFile redirection \u003e, \u003e\u003e, \u003c, \u003e\u0026, and \u003e\u003e\u0026  \nPipes |  \nisatty()  \nCtrl+C  \nZombie Elimination  \nExit the shell  \nQuotes \"\" and ''  \nEscaping special characters \\\\  \nBuiltin Functions (printenv, setenv, unsetenv, source, cd)  \nSource .shellrc file  \nSource with environment variables  \nSubshells $()  \nProcess substitution  \nEnvironment variable expansion ${}  \nTilde expansion (~)  \nWildcarding (*, ?)  \nEdit mode (arrow keys, Ctrl+D for delete, Ctrl+H for backspace, Ctrl+A for home, Ctrl+E for end)  \nHistory up and down arrow keys  \nEditing history commands  \nVariable prompt  \n\n2. Features specified in the handout that do not work.  \nNothing\n\n3. Extra features I have implemented.  \ncd - . This returns to the last directory the user was in before the current directory. Also updates PWD and OLDPWD environment variables for all cd commands.  \n$?, $_, $SHELL, $anything. Extra environment variable parsing without the curly brackets like zsh.  \nError statement if command not found\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnyoungstudios%2Fshell-project","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fnyoungstudios%2Fshell-project","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnyoungstudios%2Fshell-project/lists"}