Portable Shell Script - Determine Which Version of Binary is Installed?
I currently have a shell script that utilizes the "Date" binary - this application is slightly different on OS X (BSD General Commmand) and Linux systems (gnu date). In particular, the version on OS X requires the following to get a date 14 days in the future "date -v+14d -u +%Y-%m-%d" where gnu date requires "date -d "+ 14 days" -u +%Y-%m-%d".
I desire to make my script portable - so I believe that I'll need to utilize a test to determine which version of the date application is installed and thus, what command to run. I've come up with the following two methods, but am looking for advice:
Is there a trick to determine the exact version from Unix that one is working with?
I would have expected to see it after logon, but all I get are some Copyright-messages...
I know it's some HP-UX, but I would like to know the version-number
Tnx in advance!
Dave (2 Replies)
I'm looking for a generic (i.e. would be resident in most/all unix flavors) internal command for determining my OS and version. When I telnet to a box here @ work, I get none of that info and can't remember the equivalent of the DOS ver command; I know I used to know this! Thanks. (2 Replies)
Hello,
How to i determine via ftp commandline if files on ftp server is ascii or binary files. Like every other comon windows ftp program does it automatically.
regards
Thomas (5 Replies)
Dear linux-unix users,
I hope that one of you will be able to help me.
How can I determine to which package a file or binary belongs to.
With solaris/linux package managers you can easely determine this but i cant find the way how to do this on tru64.
Any help would greatly be appreciated.... (0 Replies)
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What I need now is a version of linux that I can install on a laptop sata hard drive and be able to plug it into any machine to transfer data off of... (1 Reply)
Hi, looking to upgrade memory on a pair of T5220's from 32GB to 64GB. Cannot determine current DIMM size and slots used. i.e. not sure if Qty 16 x 2GB or Qty 8 x 4GB. If there are no empty slots, i need to go with higher density DIMMs and retire exsisting the 2GB prtdiag follows.
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All,
I have a need for a portable shell script for LInux and HPUX. The script has a simple need; Check for local files of a specific name (i.e. filename*), scp them to another system, and archive them to a folder. The script runs via cron.
I first wrote the script in Linux (bash with gnu... (4 Replies)
Hello Forum,
I'm issuing a one line bash command to look for the version of an installed application and saving the result to a variable like so:
APP=application --version
But if the application is not installed I want to return to my variable that the Application is not installed. So I'm... (2 Replies)
Discussion started by: greavette
2 Replies
LEARN ABOUT FREEBSD
atf-sh
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