42sh

Subject:

Subject

Mandatory part:

• Prompt without line edition.
• Builtins cd, echo, exit, env, setenv, unsetenv with there options.
• Executing simple commands with there parameters using PATH.
• Support for redirection >, >>, <and |.
• Logical operand &&and ||.
• Separator ;.

Optional feature (five of theses are mandatory to validate the project):

• Inhibitors ", 'and \.
• Advanced redirections: aggregation of file output and heredoc <<.
• Globbing: *, ?, [], {}, etc.
• Backquotes `.
• Subshell with operand ().
• Local variable and builtin unset and export.
• History with builtin historyand ! with options.
• Advanced line edition.
• File descriptors and builtin read with options.
• Dynamical autocompletion.

Optional feature highly appreciated:

• Job Control and builtins job, fg, bg and operand &.
• Shell Scripting: bang (!), variable assignements, brace group, if, while, until, for and functions

Bonuses

• Bc like command with calc
• History search with CTRL+H
• Can perform arithmetic operations on local variables assignment
• Can search binary name with approximation (like which)
• Replacement of ~ by $HOME
• Replacement of any environment variable with the value of the variable.
• Binary hashtable
• Rights in the PATH
• Custom ctrl-v to handle multi-line copy and paste
• Lot of shortcut for line edition like
  • CTRL+T Change the position of the characters
  • CTRL+U Delete the entire line
  • CTRL+K Delete from cursor to the end of the line
  • CTRL+W Delete the last word typed
  • CTRL+L Clear shortcut
  • SHIFT + ▲ Up cursor
  • SHIFT + ▼ Down cursor
  • SHIFT + ▶ Go to right word
  • SHIFT + ◀ Go to left word
  • And other conventional shortcut !