CREATE TABLE "table1_14465871_1" (
  "power_shell_cmdlet" text,
  "power_shell_alias" text,
  "cmd_exe_command_com" text,
  "unix_shell" text,
  "description" text
);

Question: What are the names of all unix shell with PowerShell (Cmdlet) of select-string?
SQL: SELECT "unix_shell" FROM "table1_14465871_1" WHERE "power_shell_cmdlet"='Select-String';

Question: What are all values of CMD.EXE / COMMAND.COM for the unix shell echo?
SQL: SELECT "cmd_exe_command_com" FROM "table1_14465871_1" WHERE "unix_shell"='echo';

Question: If Powershell (alias) is cpi, copy, cp, what are all corresponding descriptions. 
SQL: SELECT "description" FROM "table1_14465871_1" WHERE "power_shell_alias"='cpi, copy, cp';

Question: When the cmd.exe / command.com is type, what are all associated values for powershell (cmdlet)?
SQL: SELECT "power_shell_cmdlet" FROM "table1_14465871_1" WHERE "cmd_exe_command_com"='type';

Question: How many values of powershell (cmdlet) are valid when unix shell is env, export, set, setenv?
SQL: SELECT COUNT("power_shell_cmdlet") FROM "table1_14465871_1" WHERE "unix_shell"='env, export, set, setenv';