Baurzhan Konurbayev baurzhan-konurbayev

## curl.strace
I'll be omitting syscalls with ellipsis.

The first thing that happens after you press enter is that bash resolves
curl to /usr/bin/curl and then forks(). The strace output is from the
forked process.

Fist execve() the /usr/bin/curl binary and pass an array of arguments to it.
execve("/usr/bin/curl", ["curl", "http://github.com"], [/* 8 vars */]) = 0
...

## .zshrc
# Configure Ruby and Gems paths on Mac

export RUBY_PATH=/usr/local/opt/ruby/bin
export PATH="$RUBY_PATH:$PATH"
export RUBY_VERSION=$($RUBY_PATH/ruby -e "puts RUBY_VERSION")
export PATH="/usr/local/lib/ruby/gems/$RUBY_VERSION/bin:$PATH"
export GEM_HOME="$HOME/.gem"
export GEM_PATH="$GEM_HOME/ruby/$RUBY_VERSION"

## merge_lists.py
input = [[1,2,3],
[3],
[4],
[5,6],
[1,7],
[2,8],
[4,9]]


"""

## gist:cd1d65d95c817d7d598f46bdbb44635d
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## understanding_ls_l_linux.md

      
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                baurzhan-konurbayev
                / understanding_ls_l_linux.md
            
            
              Created
              September 25, 2023 05:58
            
              
                Understanding the Execution of `ls -l` in Linux
              
          
    Understanding the Execution of ls -l in Linux


Command Input:

The user types ls -l in the terminal, and the shell reads this input.


Command Parsing & PATH Variable:

The shell parses the command and its arguments.
The shell searches for the ls binary in the directories listed in the PATH environment variable.


Permission & Access Check:
	I'll be omitting syscalls with ellipsis.

	The first thing that happens after you press enter is that bash resolves
	curl to /usr/bin/curl and then forks(). The strace output is from the
	forked process.

	Fist execve() the /usr/bin/curl binary and pass an array of arguments to it.
	execve("/usr/bin/curl", ["curl", "http://github.com"], [/* 8 vars */]) = 0
	...
	# Configure Ruby and Gems paths on Mac

	export RUBY_PATH=/usr/local/opt/ruby/bin
	export PATH="$RUBY_PATH:$PATH"
	export RUBY_VERSION=$($RUBY_PATH/ruby -e "puts RUBY_VERSION")
	export PATH="/usr/local/lib/ruby/gems/$RUBY_VERSION/bin:$PATH"
	export GEM_HOME="$HOME/.gem"
	export GEM_PATH="$GEM_HOME/ruby/$RUBY_VERSION"