Shell equality operators (=, ==, -eq) Asked 12 years, 1 month ago Modified 3 years, 7 months ago Viewed 651k times

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 …

What does $# mean in shell? I have code such as if [ $# -eq 0 ] then I want to understand what $# means, but Google search is very bad for searching these kinds of things.

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 …

Oct 27, 2021 · The shell will try to create directory test and then, only if it was successful will try create file inside it. So you may interrupt a sequence of steps if one of them failed.

What command checks if a directory exists or not within a Bash shell script?

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 …

I want to redirect both standard output and standard error of a process to a single file. How do I do that in Bash?

Jul 22, 2010 · Maybe also point out that switching from single to double quotes requires any $ or ` in the sed script to be escaped with a backslash, to protect it from the shell's substitution …

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 …