04-17-2017
Hi.
Aside from the fact that the script has many lines, some of the lines are long. I tend to look at code if it fits within the width of a page, without me needing to scroll horizontally. Shells are very good at being able to continue pipelines. Other code can have lines terminated with \ to escape the newline. I think that aids comprehension and maintainability.
So without looking at your script in any detail, the next thing I would try is placing set -x in the script. You could also place intermediate printf/echo statements at crucial spots in your script. I use functions to turn on/off debugging output.
You could place set -x at the beginning to see everything. You could place it near the middle of the code, and then bisect the placement depending on whether you see something wrong or not.
Keep in mind that there could be more than error.
Best wishes ... cheers, drl
Last edited by drl; 04-17-2017 at 09:53 AM..
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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 file name 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)