What is the purpose of shopt-s extglob?
As a new user to Ubuntu I am curious to know what this command is doing. In simple terms, globbing refers to pattern matching. Bash uses simple globbing like, echo l* which expand to list of files in current directory that start with letter l. Of course , as you can guess, it’s simple and limited. Enter extglob.
What is the result of bash set and shopt?
Setting with the set command results in $SHELLOPTS. Setting with the shopt command results in $BASHOPTS. Probably linked to the history mentioned by @Gilles. Easy but lost in history. The set command was originally used to modify the command line environment of the original unix shells /bin/sh.
What does extglob stand for in man Bash?
Enter extglob. As you can guess, it stands for extended globbing. This option allows for more advanced pattern matching. From man bash: extglob If set, the extended pattern matching features described above under Pathname Expansion are enabled.
What’s the difference between globbing and extglob in Bash?
In simple terms, globbing refers to pattern matching. Bash uses simple globbing like, echo l* which expand to list of files in current directory that start with letter l. Of course , as you can guess, it’s simple and limited. Enter extglob. As you can guess, it stands for extended globbing. This option allows for more advanced pattern matching.
How to see if globstar is set in Bash?
You can see if globstar is set by issuing the shopt command without any arguments: $ shopt force_fignore on globstar on gnu_errfmt off or if you want to test it in a script you can use the -q option to shopt and test the exit status, for example:
Which is the extended option for extglob in Java?
The extended option is extglob which needs to be set using the shopt option as below. The options are enabled with the -s support and disabled with he -u flag. Additionally you could use couple of options more i.e. nullglob in which an unmatched glob is swept away entirely, replaced with a set of zero words.