SPEC.md

1 Shell must be able to read shell configuration from files named *.sh142 in the current directory if any. Test: features/confing_files.feature

2 User should be able to dynamically set persistent executable path. i.e. PATH=/home/usr/myname:/usr/bin Test: features/path_manipulation.feature:2

3 User should be able to dynamically set a persistent data file path: DATA=/data/files:/home/usr/myname Test: features/path_manipulation.feature:13

4 User should be able to run any commands on the path Test: features/path_manipulation.feature:2

5 User should be able to run a command with an argument being a data file as follows, and the shell should automatically locate the file in the data path (DATA): mycommand #D:datafileargument *Test:* features/path_manipulation.feature:13`

6 User should be able to check the exit status of the last few commands by executing $?1, $?2, ... Test: features/exit_statuses.feature

7 User should be able to redirect stdin, stdout, stderr to files using the <, >, and 2> symbols. Test: `features/io_redirection.feature

8 User should be able to pipeline a number of commands using the following syntax: cmd1 | cmd2 | cmd3 ... Test: features/command_pipelining.feature

9 User should be able to execute commands conditionally: !cmd1 && cmd2 || cmd3.. Test: features/conditional_operation.feature

10 User should be able to specify commands to run in the background. cmd & Test: features/background_jobs.feature

11 User should be able to bring background commands back to foreground. Test: features/background_jobs.feature

12 User should be able to query background jobs. Test: features/background_jobs.feature

13 User should be able to specify maximum amount of memory and CPU utilization that a command may use before being terminated by the shell. - CPUMAX=99:200 (programs can run at most 200 seconds wit CPU utilization of 99% or more.) - MEMMAX=50M:360 (programs cannot exceed 50Megabytes for more than 360 seconds) - TIMEMAX=250 (programs can't run for more than 250 seconds) Test: features/resource_controls.feature

14 User should be able to iterate the execution of one or more commands as follows: for (n=0;m < MAX; n++)\n com1; com2; ...; forend Test: features/flow_control.feature

15 User should be able to set and unset shell variables and use them in command lines. MYPATH=/mydir; cmd1 $MYPATH/file Test: features/set_variables.feature

16 Shell must connect to remote shells and be able to support local and remote execution. - node1:cmd1 (execute cmd1 in remote node1) - localhost:cmd2 (execute cmd2 on local host) Test: features/remote_exec.feature