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Full Discussion: meaning of ${0%${0##*/}}
Operating Systems AIX meaning of ${0%${0##*/}} Post 302239045 by nyelavarthy on Monday 22nd of September 2008 10:32:30 PM
Old 09-22-2008
scripts adminBuildDomain and crstEnv are in the same directory. from this directory only we run all the scripts.

adminBuildDomain calls crstEnv

Code in adminBuildDomain is: . ${0%${0##*/}}crstEnv

${0%${0##*/}}crstEnv returns crstEnv value

since the directory path where we run the scripts is same as the directory where the scripts are present, we can use . ./crstEnv instead of . ${0%${0##*/}}crstEnv

i really dont understand the importance of ". ${0%${0##*/}}crstEnv" in this case. i dont understand why ". ${0%${0##*/}}crstEnv" is used instead of ". ./crstEnv"
 

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service(8)						      System Manager's Manual							service(8)

NAME
service - run a System V init script SYNOPSIS
service SCRIPT COMMAND [OPTIONS] service --status-all service --help | -h | --version DESCRIPTION
service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working directory set to /. The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT. The supported values of COMMAND depend on the invoked script, service passes COMMAND and OPTIONS it to the init script unmodified. All scripts should support at least the start and stop commands. As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start command. service --status-all runs all init scripts, in alphabetical order, with the status command. EXIT CODES
service calls the init script and returns the status returned by it. FILES
/etc/init.d The directory containing System V init scripts. ENVIRONMENT
LANG, TERM The only environment variables passed to the init scripts. SEE ALSO
/etc/init.d/skeleton, update-rc.d(8), init(8), invoke-rc.d(8). Jan 2006 service(8)
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