Output of which command used for input to cd
I would like to take the output of a which command, and cd to the parent directory. For example, say I have the following:
bash
What is the best way to detect (from a script) whether software is installed?
I’ve been frustrated before with differences in output from the which command across different platforms (Linux vs. Solaris vx. OS X), with different shells possibly playing into the matter as well. type has been suggested as a better alternative, but how portable would that be?
Use system command instead of Bash builtin without specifying the full path
I use Bash as my interactive shell and I was wondering if there was an easy way to get Bash to run a system command instead of a shell builtin command in the case where they both share the same name.
Running an executable in PATH with the same name as an existing function
Sometimes I define a function that shadows an executable and tweaks its arguments or output. So the function has the same name as the executable, and I need a way how to run the executable from the function without calling the function recursively. For example, to automatically run the output of fossil diff through colordiff and less -R I use:
The paradox of logical AND (&&) and OR (||) in a bash script to check the successful execution of command (exit code of 0 is interpreted as true)
So I well understand that exit code of 0 is considered success in running of a program. Then we use this in bash scripts with logical AND and OR to run the next program based on the exit status of the first program. A good example can be found here: https://unix.stackexchange.com/a/187148/454362
Why should I use $[ EXPR ] instead of $(( EXPR ))?
On the paragraph explaining arithmetic expansion, Bash’s user guide uncovers 2 different ways of evaluating an expression, the first one uses $(( EXPRESSION )) and the second one uses $[ EXPRESSION ]. The two ways seem pretty similar as the only difference I have found is:
How do I join an array of strings where each string has spaces?
My bash script:
bash aliases do not expand even with shopt expand_aliases
I want to run an alias inside a bash -c construct.
Bash script doesn’t see SIGHUP?
I’ve got the following script:
Automating vncserver with expect not working as expected
I thought of automating the part when i first run vncserver, since it ask for a password (and while i know there a flag to pass a passwd file, i prefer to generate a new one every time i need/want to):