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Design patterns or best practices for shell scripts [closed]
... getopts. Use getopt as you face less trouble.
CommandLineOptions__config_file=""
CommandLineOptions__debug_level=""
getopt_results=`getopt -s bash -o c:d:: --long config_file:,debug_level:: -- "$@"`
if test $? != 0
then
echo "unrecognized option"
exit 1
fi
eval set -- "$getopt_results"
...
How do I get logs/details of ansible-playbook module executions?
...support for logging. Add the following lines to your ansible configuration file:
[defaults]
log_path=/path/to/logfile
Ansible will look in several places for the config file:
ansible.cfg in the current directory where you ran ansible-playbook
~/.ansible.cfg
/etc/ansible/ansible.cfg
...
java.lang.IllegalStateException: Cannot (forward | sendRedirect | create session) after response has
...rvlets the right way.
Another probable cause is that the servlet writes a file download to the response after which e.g. a forward() is called.
protected void doXxx() {
out.write(bytes);
// ...
forward(); // Fail!
}
This is technically not possible. You need to remove the forward() ca...
The remote end hung up unexpectedly while git cloning
....1 and Transfer-Encoding: chunked is used to avoid creating a massive pack file locally. Default is 1 MiB, which is sufficient for most requests.
Even for the clone, that can have an effect, and in this instance, the OP Joe reports:
[clone] works fine now
Note: if something went wrong on t...
Finalize vs Dispose
...he loose timing of Finalize is horrible for non-fungible resources such as files and locks, but may be okay for fungible resources.
– supercat
May 17 '13 at 20:56
13
...
Regular expression to stop at first match
...gular expression non-greedy, because by default, "(.*)" will match all of "file path/level1/level2" xxx some="xxx".
Instead you can make your dot-star non-greedy, which will make it match as few characters as possible:
/location="(.*?)"/
Adding a ? on a quantifier (?, * or +) makes it non-greedy...
What are the differences between Autotools, Cmake and Scons?
...because no one could figure out how to produce said "idiomatic" VS Project files.
– weberc2
May 25 '16 at 17:34
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Is Java really slow?
...es when starting programs which improved performance over loading a longer file from the hard drive. The disparity between CPU and hard drive has grown enormously over the intervening years. However, there is a problem with using the zip archive format for rt.jar (why?!!!) and the contained class fi...
JPA or JDBC, how are they different?
...ider allows you to save them and load them magically. Mostly, XML mapping files or annotations on getters and setters can be used to tell the JPA provider which fields on your object map to which fields in the DB. The most famous JPA provider is Hibernate, so it's a good place to start for concret...
What is the difference between partitioning and bucketing a table in Hive ?
...Other drawback is having too many partitions is the large number of Hadoop files and directories that are created unnecessarily and overhead to NameNode since it must keep all metadata for the file system in memory.
Bucketing is another technique for decomposing data sets into more manageable parts....