yes, and as I said, you're free to code your project the way you like. But, next to stating your preference to using braces, you linked to an article titled "Why You Should Put Braces around …

Feb 10, 2012 · The shell command and any arguments to that command appear as numbered shell variables: $0 has the string value of the command itself, something like script, ./script, …

Jan 16, 2014 · Shell scripting: -z and -n options with if Ask Question Asked 11 years, 9 months ago Modified 9 months ago

Jul 5, 2018 · -1 This answer is very misleading, following on from the question’s misleading title. -f has nothing to do with if; it is an option for the [ command, which just happens to be called …

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

I can read the numbers and operation in with: echo "First number please" read num1 echo "Second number please" read num2 echo "Operation?" read op but then all my attempts to …

See What is the difference between > and >> (especially as it relates to use with the cat program)?, What does “3>&1 1>&2 2>&3” do in a script? and of course, your shell's manual. …

Mar 27, 2015 · There is no stand-alone read command: instead, it is a shell built-in, and as such is documented in the man page for bash: read [-ers] [-a aname] [-d delim] [-i text] [-n nchars] [-N …

Oct 5, 2014 · 879 sed is the s tream ed itor, in that you can use | (pipe) to send standard streams (STDIN and STDOUT specifically) through sed and alter them programmatically on the fly, …

Jun 13, 2017 · 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 …