Shell equality operators (=, ==, -eq) Asked 11 years, 11 months ago Modified 3 years, 5 months ago Viewed 646k times

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 …

I often come across $?, $0, $1, $2, etc in shell scripting. I know that $? returns the exit status of the last command: echo "this will return 0" echo $? But what do the others do? …

Shell - "Shell" is a program, which facilitates the interaction between the user and the operating system (kernel). There are many shell implementations available, like sh, Bash, C shell, Z …

Dec 22, 2010 · What is the purpose of "&&" in a shell command? Asked 14 years, 10 months ago Modified 2 years, 5 months ago Viewed 683k times

Feb 20, 2011 · When going through one shell script, I saw the term "$?". What is the significance of this term?

Here shell is an alias for bash. Chroma has something called Session. Pygments (doc) uses console, shell-session for bash sessions, pwsh-session, ps1con for power shell sessions and …

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.

BTW, in bash a semi-colon is a statement separator, not a statement terminator, which is a new-line. So if you only have one statement on a line then the ; at end-of-line are superfluous. Not …

I am writing a shell script to run under the KornShell (ksh) on AIX. I would like to use the mkdir command to create a directory. But the directory may already exist, in which case I do not …