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GNU Bash vs Hack: What are the differences?
Developers describe GNU Bash as "Functional improvements over sh for both programming and interactive use". The Bourne Again SHell is an sh-compatible shell that incorporates useful features from the Korn shell (ksh) and C shell (csh). It is intended to conform to the IEEE POSIX P1003.2/ISO 9945.2 Shell and Tools standard. On the other hand, Hack is detailed as "A programming language for HHVM that interoperates seamlessly with PHP". Hack provides instantaneous type checking via a local server that watches the filesystem. It typically runs in less than 200 milliseconds, making it easy to integrate into your development workflow without introducing a noticeable delay.
GNU Bash can be classified as a tool in the "Shells" category, while Hack is grouped under "Languages".
According to the StackShare community, GNU Bash has a broader approval, being mentioned in 40 company stacks & 73 developers stacks; compared to Hack, which is listed in 8 company stacks and 3 developer stacks.
If you have a file (demo.txt) that has 3 columns:
Column-1 Column-2 Column-3
Row-1a Row-2a Row-3a
Row-1b Row-2b Row-3b
Row-1c Row-2c Row-3c
Row-1d Row-2d Row-3d
Row-1e Row-2e Row-3e
and you want to only view the first column of the file in your CLI, run the following:
awk {'print $1'} demo.txt
Column-1
Row-1a
Row-1b
Row-1c
Row-1d
Row-1e
If you want to print the second column of demo.txt, just replace $1 with $2
Pros of GNU Bash
- Customizable3
- Powerful scripting language3
- Widely adopted2
- Cross platform0
Pros of Hack
- Interoperates seamlessly with php6
- Open source6
- Backed by facebook5
- HHVM4
- PHP like2
- Great documentation2
- Generics2
- Fast1
- Used by facebook1
- Great type system0
- Easy to learn0
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Cons of GNU Bash
- Too Slow1
