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I'm having problems with Common Shell Environment Variables. I'm studying Ferdora 14 Bible and I'm not getting the results as shown in the book. Please take a look at what I'm doing and let me know where I'm going wrong.
As you can see I start out as a User by the $ prompt, according to the book I should get the following information: /bin/bash. As you can see I get nothing, so I entered into SU mode and ran the same command and still I get no information,
This isn't the only variable I'm having problems with.
Have I done something wrong,
[TomOmega@Linux ~]$ bash
[TomOmega@Linux ~]$ su
[root@Linux TomOmega]# bash
[TomOmega@Linux ~]$ su
[root@Linux TomOmega]# cd /
[root@Linux /]# bash
[TomOmega@Linux /]$ bash_version
bash: bash_version: command not found...
[TomOmega@Linux /]$ euid
bash: euid: command not found...
[TomOmega@Linux /]$ EUID
bash: EUID: command not found...
[TomOmega@Linux /]$ fcedit
bash: fcedit: command not found...
[TomOmega@Linux /]$ FCEDIT
bash: FCEDIT: command not found...
[TomOmega@Linux /]$ histfile
bash: histfile: command not found...
[TomOmega@Linux /]$ HISTFILE
bash: HISTFILE: command not found...
[TomOmega@Linux /]$ histfilesize
bash: histfilesize: command not found...
[TomOmega@Linux /]$ HISTFILESIZE
bash: HISTFILESIZE: command not found...
[TomOmega@Linux /]$ histcmd
bash: histcmd: command not found...
[TomOmega@Linux /]$ HISTCMD
bash: HISTCMD: command not found...
The list of variables where command not found continues:
HISTFILE, OLDPWD, etc. these are not commands (commands are executables that can be run), while these are environment variables they need to be preceded by the $ symbol.
Bash commands are found in /usr/bin directory (and others; you don't need to write the absolute path, since it is already included in the PATH directive, see echo $PATH) , you can check the correct path for any other command.