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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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basename(1)							   User Commands						       basename(1)

NAME
basename, dirname - deliver portions of path names SYNOPSIS
/usr/bin/basename string [suffix] /usr/xpg4/bin/basename string [suffix] dirname string DESCRIPTION
The basename utility deletes any prefix ending in / and the suffix (if present in string) from string, and prints the result on the stan- dard output. It is normally used inside substitution marks (``) within shell procedures. /usr/bin The suffix is a pattern defined on the expr(1) manual page. /usr/xpg4/bin The suffix is a string with no special significance attached to any of the characters it contains. The dirname utility delivers all but the last level of the path name in string. EXAMPLES
Example 1 Setting environment variables The following example, invoked with the argument /home/sms/personal/mail sets the environment variable NAME to the file named mail and the environment variable MYMAILPATH to the string /home/sms/personal: example% NAME=`basename $HOME/personal/mail` example% MYMAILPATH=`dirname $HOME/personal/mail` Example 2 Compiling a file and moving the output This shell procedure, invoked with the argument /usr/src/bin/cat.c, compiles the named file and moves the output to cat in the current directory: example% cc $1 example% mv a.out `basename $1 .c` ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of basename and dirname: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: /usr/bin +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ /usr/xpg4/bin +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWxcu4 | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
expr(1), basename(3C), attributes(5), environ(5), standards(5) SunOS 5.11 18 Mar 1997 basename(1)
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