How can one extract the exit code of a command?
94622
How does one extract a command's exit status into a variable?
103812
How to see the command attached to a bash alias?
32893
How to grep standard error stream (stderr)?
134147
Can I get the output of a command line program with TeX (using e.g. \read18)?
145669
Where is `exit` defined?
80855
How can I find the program I'm hiding in bash
65718
What's the terminal command for finding out a process's id
36068
How to see terminal commands generated by GUI actions
85968
How do I find a command if I don't know its name?
144183
Command to escape a string in bash
21939
How do I get the application exit code from a Windows command line?
20125
How do I syntax check a Bash script without running it?
81725
Finding Command-Line Arguments of Programs
91568
How to correctly escape command arguments from an environment variable
35550
Is there an easy way to log all commands executed, including command line arguments?
70866
Check command success in bash
99250
How do I read the source code of shell commands?