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#Rshell bash terminal emulator Rshell is a simple bash terminal emulator that carries out commands similar to a Unix bash terminal.

##Installation Installation is simple! Just run the following git commands.

$ git clone https://github.com/jdixo001/rshell.git
$ cd rshell
$ git checkout hw0
$ make
$ bin/rshell

##Rshell: Bugs, behaviors, and limitations

  • $ ls && : This command will ignore the two connectors at the end. This goes for any connector.

  • $ ls | ls: Results in an error rather than reading the commands.

  • echo "Message && Message": Results in an error due to the presence of a connector.

  • Supports piping and input redirection, or piping and output redirection, but not all three combined.

  • Input redirection or output redirection must come first if the user is to pipe, followed by only pipes and no other recirection types. i.e. $ cat < this | grep bin #supported, $ ls > this | grep bin #supported, $ cat < this | grep bin > that #not supported, $ cat < this | grep bin < this > that | grep bin #not supported

  • cd *home* will produce an error though cd *home*/ will not. In the case of using cd with any full path it is always best to add the trailing /.

  • ls > this | grep bin: outputs ls to a file as well as outputting the word bin as well. In a way it is double outputting.

  • When there are odd numbers of false statements connected by && the last command will get executed, which isn't all that bad in most cases

Example-false && false && ls ; pwd: prints both ls and pwd, not just pwd.

  • The array that holds the arguments and flags holds up to 50000 spots.

  • CTRL-C works fine but outputs a HEX value. This does not affect the behavior.

##LATEST FEATURES##

*cd is now almost fully possible.

*^C CTRL-C Signal now supported.

*Outputs the current working directory, with a ~ for HOME.

##New Feature, custom ls command The latest rshell package comes equipped with a stripped down version of ls. This is downloaded the same way as rshell but instead run:

git checkout hw1
make
bin/ls

and use with any combination of the -l, -a, or -R commands. Now with colors!

##ls: Bugs, behaviors, and limitations

  • ls #optional file parameter of not a directory: results in an error, for the optional file parameters must be directories.

  • Mutltiple listed files and directories are not in organized columns, and random \n characters may make output ugly.

  • Multiple optional file parameters paired with . and .. will automatically display . and .. first.

  • Alignment in -l flag is buggy and will sometimes be unaligned.

  • Total number of 512-blocks for -l is on the bottom, not the top.

NOTE: Much life real bugs, bugs in programs and code are hard to find sometimes. If a bug is found let me know, or try to fix it yourself and notify me. Thanks!