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Full Discussion: Alias not working
Operating Systems Solaris Alias not working Post 302918798 by Don Cragun on Thursday 25th of September 2014 03:06:09 PM
Old 09-25-2014
Aliases set in a shell affect the current shell and any subshell execution environments started by that shell; they are not exported to other shell execution environments (such as when you invoke another shell script).

Most shells have several startup files that are invoked under various conditions (such as when you login, when you start a new interactive shell, when you start a new non-interactive shell, etc. but these vary from shell to shell). If you place your alias in the appropriate initialization file for your shell, you may be able to set up aliases that affect all scripts you start that use that shell.

Another possibility is to add symbolic links in your $HOME/bin directory (assuming that $HOME/bin appears in your PATH environment variable before /bin and /usr/bin. And, if you would just put /usr/xpg4/bin in your PATH before /bin and /usr/bin that would get rid of the need for awk, egrep, grep, (and fgrep) aliases. Are there other utilities in /usr/xpg4/bin that would cause you problems if you used them instead of the utilities of the same name in /usr/bin?

But, if you are writing shell scripts that other users will be invoking, that shell script needs to set up its own environment and not depend on the user calling it to set up a specific (possibly different) environment for each command they execute.
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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