
- bash - Shell equality operators (=, ==, -eq) - Stack Overflow- Shell equality operators (=, ==, -eq) Asked 11 years, 10 months ago Modified 3 years, 5 months ago Viewed 644k times 
- What is the meaning of $? in a shell script? - Unix & Linux Stack …- Feb 20, 2011 · When going through one shell script, I saw the term "$?". What is the significance of this term? 
- shell - What does "--" (double dash / double hyphen) mean?- In man bash we can read in Shell Builtin Commands section (online doc): Unless otherwise noted, each builtin command documented in this section as accepting options preceded by - accepts … 
- error in unix shell script - Unix & Linux Stack Exchange- You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation and how do I … 
- shell - How to concatenate string variables in Bash - Stack Overflow- Nov 15, 2010 · A bashism is a shell feature which is only supported in bash and certain other more advanced shells. It will not work under busybox sh or dash (which is /bin/sh on a lot of … 
- Difference between Login Shell and Non-Login Shell?- May 8, 2012 · I understand the basic difference between an interactive shell and a non-interactive shell. But what exactly differentiates a login shell from a non-login shell? Can you give … 
- When do we need curly braces around shell variables?- You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation and how do I … 
- What is the difference between shell, console, and terminal?- The shell is the program which actually processes commands and returns output. Most shells also manage foreground and background processes, command history and command line editing. 
- How to represent multiple conditions in a shell if statement?- Sep 30, 2010 · How to represent multiple conditions in a shell if statement? Asked 15 years, 1 month ago Modified 3 years, 9 months ago Viewed 1.2m times 
- shell - How can I compare numbers in Bash? - Stack Overflow- You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation and how do I …