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Full Discussion: Defined Command in UNIX
Top Forums Shell Programming and Scripting Defined Command in UNIX Post 302762767 by zazzybob on Tuesday 29th of January 2013 03:33:34 AM
Old 01-29-2013
Create a shell script, and place in one of the directories referred to in your $PATH variable. Or, place in a custom location, and update $PATH appropriately:

Code:
# vi /path/to/shellscript.sh
# chmod +x /path/to/shellscript.sh
# export $PATH=/path/to:$PATH
# which shellscript.sh
/path/to/shellscript.sh
# shellscript.sh
...

Keeping your custom scripts/commands/executables in an appropriate location (normally /usr/local/bin, or ~/bin) will prevent them from becoming mixed with system provided files, and should prevent them being touched during upgrades/etc.

I'd always recommend placing your custom directories at the front of $PATH, so you can override system-provided scripts/binaries if required (with your own wrappers, for example).

Cheers,
ZB
 

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FILECAP:(8)						  System Administration Utilities					       FILECAP:(8)

NAME
filecap - a program to see capabilities SYNOPSIS
filecap [ -a | -d | /dir | /dir/file [cap1 cap2 ...] ] DESCRIPTION
filecap is a program that prints out a report of programs with file based capabilities. If a file is not in the report or there is no report at all, no capabilities were found. For expedience, the default is to check only the directories in the PATH environmental variable. If the -a command line option is given, then all directories will be checked. If a directory is passed, it will recursively check that directory. If a path to a file is given, it will only check that file. If the path to the file includes capabilities, then they are written to the file. OPTIONS
-a This tells the program to show all capabilities starting from the / directory. Normally the PATH environmental variable is used to show you capabilities on files you are likely to execute. -d This dumps all capabilities for reference. EXAMPLES
To check file capabilities in $PATH: filecap To check file capabilities of whole system: filecap -a To check file capabilities recursively in a directory: filecap /usr To check file capabilities of a specific program: filecap /bin/passwd To list all possible capabilities: filecap -d To set a file capability on a specific program: filecap /bin/ping net_raw net_admin SEE ALSO
pscap(8), netcap(8), capabilities(7). AUTHOR
Steve Grubb Red Hat March 2009 FILECAP:(8)
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