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Old 07-12-2016, 11:13 PM   #1
hareen
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what are . ~userid/.profile, rlwrap commands used for in linux?


what are below commands used for in linux?
  1. . ~userid/.profile
  2. rlwrap H
 
Old 07-13-2016, 12:44 PM   #2
Jjanel
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man rlwrap (look at -H) http://linux.die.net/man/1/rlwrap
man sh (look for .profile ) http://linux.die.net/man/1/sh
Quote:
When bash is invoked as an interactive login shell, or as a non-interactive shell with the --login option, it first reads and executes commands from the file /etc/profile, if that file exists. After reading that file, it looks for ~/.bash_profile, ~/.bash_login, and ~/.profile, in that order, and reads and executes commands from the first one that exists and is readable. The --noprofile option may be used when the shell is started to inhibit this behavior.
The initial dot executes it manually. (see source)
Quote:
. filename [arguments]
source filename [arguments]
Read and execute commands from filename in the current shell environment and return the exit status of the last command executed from filename. If filename does not contain a slash, file names in PATH are used to find the directory containing filename. The file searched for in PATH need not be executable. When bash is not in posix mode, the current directory is searched if no file is found in PATH. If the sourcepath option to the shopt builtin command is turned off, the PATH is not searched. If any arguments are supplied, they become the positional parameters when filename is executed. Otherwise the positional parameters are unchanged. The return status is the status of the last command exited within the script (0 if no commands are executed), and false if filename is not found or cannot be read.
See Tilde Expansion: the tilde-prefix is replaced with the home directory associated with the specified login name [userid]

web-search ( http://duckduckgo.com or google etc) this:
linux tutorial shell
(replace shell with other things you are researching; maybe add the word man)

Feel free to ask about anything that you don't find or that puzzles you!
p.s. WELCOME to this site (I'm new here too!)
p.p.s I'm curious what Linux "distro"bution you use, and what computer [model etc] you run it on [I tryout many small distros in VirtualBox on an old XP netbook!]

Last edited by Jjanel; 07-13-2016 at 01:04 PM.
 
  


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