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Review Assignment Due Date

cookieshell

i built my own shell from scratch!

Instructions

To compile:

make

To run:

./cookieshell

To quit:

bye

Description

  • main.c: to keep accepting commands and calling the relevant functions
  • common.c: to set the global values which will remain constant throughout
  • command.c: to run the commands separated by ;
  • prompt.c: to set correct prompts (based on the current directory) every time
  • warp.c: for all warp commands (resembling cd in bash)
  • proclore.c: for all proclore commands
  • peek.c: for all peek commands (resembling ls in bash)
  • bg.c: for handling background processes
  • fg.c: for handling foreground processes
  • syscom.c: for handling system commands (like echo, sleep, etc)
  • pastevents.c: for handling pastevents commands
  • seek.c: for handling seek commands
  • activities.c: for handling the activities command
  • fgbg.c: for handling fg and bg commands
  • signals.c: for handling signal-related i.e the ping commands.
  • neonate.c: for handling the neonate command.
  • iman.c: for handling iMan commands.

Assumptions

  • The maximum size of file name is 255.
  • The maximum size of system name is 255.
  • The maximum size of user name is 255.
  • The maximum size of a path is 4096.
  • If I do cd .. when I am at /, where there isn't any further parent directory to go back to, I will just stay there (similar to the Ubuntu terminal).
  • For warp,
    • If relative path is given as argument, it will be given in the format: ~/xyz or ./xyz
    • Absolute path is given as argument if and only if it begins with /
    • No file has space(s) in its name
  • The assumptions for warp mostly follow through for peek and seek as well.
  • If I have a command like warp .. xyz where warp .. is valid but warp xyz isn't, then we will just warp to .. and then display the error message for the second part. Note that since half of the command was executed, we will include the entire command in pastevents.
  • Maximum number of arguments in a command is 100.
  • The maximum length of an argument is 4096.
  • There can't be more than 250 background processes at a time
  • Maximum length of a command is 10000.
  • No file named pastevents.txt will be added to this directory.
  • File name inputs are case sensitive
  • In neonate,
    • if non-integer values are entered as the time argument, they will be rounded to their floor value.
    • non-negative values will not be entered.
  • For I/O redirection, only the following cases are possible:
    • no < or > or >>
    • one <
    • one >
    • one >>
    • one < and one >
    • one < and one >>
  • For the output of iMan, there can be some HTML tags.