copying bash variables into a Perl script

fionbarr has asked for the wisdom of the Perl Monks concerning the following question:

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Re: copying bash variables into a Perl script by toolic (Bishop) on Jun 15, 2010 at 19:51 UTC
Here are 2 ways: pass them onto your Perl script command line set environment variables in your bash script, then read them in your Perl script from %ENV	[reply]
Re^2: copying bash variables into a Perl script by ikegami (Patriarch) on Jun 15, 2010 at 20:14 UTC
Examples: pass them onto your Perl script command line `$ perl -le'print $ARGV[0]' 'Hello, World!' Hello, World!` [download] `$ FOO='Hello, World!' $ perl -le'print $ARGV[0]' "$FOO" Hello, World!` [download] set environment variables in your bash script `$ FOO='Hello, World!' $ export FOO $ perl -le'print $ENV{FOO}' Hello, World!` [download] `$ export FOO='Hello, World!' $ perl -le'print $ENV{FOO}' Hello, World!` [download] `$ FOO='Hello, World!' perl -le'print $ENV{FOO}' Hello, World!` [download]	[reply] [d/l] [select]
Re^2: copying bash variables into a Perl script by Xilman (Hermit) on Jun 16, 2010 at 11:27 UTC
Here is another but rather silly way: have the Perl script read the source of the bash script and extract the names and values of the bash variables. The only advantage I see of this approach over your suggestions is that the Perl script needs only to know the name of the bash script. It does not need to know either the number or the names of the bash variables. Paul	[reply]
Re^2: copying bash variables into a Perl script by Anonymous Monk on Jul 18, 2014 at 10:20 UTC
i have a shell script and perl script in different paths i have exported a variable name in sh script and referencing it in perl script using %ENV. But still i get error as uninitialised value am i supposed declare the shell script path in anyway lik how we use "require" and "use" or is there any other way of coding it? please help me in getting the solution for it.	[reply]
Re^3: copying bash variables into a Perl script by Anonymous Monk on Jul 18, 2014 at 10:30 UTC
See Get default login environment and sourcing a shell script/.profile and importing into %ENV and others from list below I have a copy/paste of crontab related FAQs What I'm trying to figure is what element of that would cause the script to fail in cron on one server but not the other. My feeling is that it's the database client. The error message is supposed to tell you that :) No error message? Adjust cron error reporting, check your mail, ... Still no error message? Increase verbosity (maybe `use Carp::Always;` or twiddle some logging levels or $DEBUG++/$VERBOSE++, whatever you're using Still no error message? Maybe redirect errors to a logfile ? Once you have an error message, you can check the usual (everything, sanity check), $PATH/$LD_LIBRARY_PATH..., chroot jail,selinux, permissions and password typos, shebang ... its a checklist, error message usually tells you what to check Like the deep links from Re: Cron revisited/Re^2: Perl Module Not Working In Crontab explain, and here they are: Perl/UNIX .profile problem Unix Aliases? Perl Script Not Working With Crontab Twig in a crontab? Running Perl program w/root privs via cron system call in crontab Perl & cron job environmental variables HowTo: Add Jobs To cron Under Linux or UNIX? Unix FAQ - Cron Unix FAQ - Cron Cron jobs do not inherit the login environment of the user Cron jobs do not have a stdin associated with them ... Cron Frequently Asked Questions Cron Job FAQ Basic Linux Operations FAQ Automating Tasks with Cron and Crontab files 4.4. Scheduling processes system command is not working I have some problem with Crontab perl file doesn't execute script fails loading module version, but > version is installed CGI Help Guide , Troubleshooting Perl CGI scripts Csh Programming Considered Harmful How do I set env. Variables from Perl with shell script Get default login environment Set shell environment variables from within a perl script How to change a script's environment after the script is already run, based on shell sourcing ? Perl: Source shell script to for environment variables? Reading and setting the environment from a shell script for the calling program Importing environment variables from shell script file to Perl sourcing a shell script/.profile and importing into %ENV setting perl ENV from file Changing parent process environment variable Re^3: DBD::mysql fail install check (DYLD_LIBRARY_PATH ldd otool install_name_tool VERSIONER_PERL_PREFER_32_BIT .bundle/.dylib/.so Making a system command work via a scheduled task. How to troubleshoot scheduled tasks in Windows XP and in Windows Server 2003 Re^6: pp and multiple perl scripts Basic debugging checklist , brian's Guide to Solving Any Perl Problem	[reply]


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