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Top Forums UNIX for Dummies Questions & Answers Help Needed with Creating Script Post 302461491 by bakunin on Monday 11th of October 2010 10:29:56 AM
Old 10-11-2010
Quote:
Originally Posted by methyl
Run a script containing appropriate environment settings -
This is a VERY VALUABLE suggestion which relevance can't be overestimated. The "number 1 cron problem" is like this:

i have written script x and it works fine from the command line and after i put it in cron it fails every time

and has exactly this reason: the script in question has no environment. Here is a blueprint for (cron-)scripts:

Code:
#!/bin/ksh

. /etc/environment             # for AIX
. /etc/bashrc                  # alternatively, for Linux


... here goes the rest of your code ...

exit 0

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
 

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RBASH(1)						      General Commands Manual							  RBASH(1)

NAME
rbash - restricted bash, see bash(1) RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow- ing are disallowed or not performed: o changing directories with cd o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV o specifying command names containing / o specifying a filename containing a / as an argument to the . builtin command o specifying a filename containing a slash as an argument to the -p option to the hash builtin command o importing function definitions from the shell environment at startup o parsing the value of SHELLOPTS from the shell environment at startup o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators o using the exec builtin command to replace the shell with another command o adding or deleting builtin commands with the -f and -d options to the enable builtin command o using the enable builtin command to enable disabled shell builtins o specifying the -p option to the command builtin command o turning off restricted mode with set +r or set +o restricted. These restrictions are enforced after any startup files are read. When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script. SEE ALSO
bash(1) GNU Bash-4.0 2004 Apr 20 RBASH(1)
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