Expr-eval-2.0.2.tgz: 2 Vulnerabilities (highest Severity Is: 9.8) Unreachable

Here the expression will be calculated by the program expr, which isn't a shell builtin but an external unix program. Expr 3 * ${ 2 + 1 }$ unless you're working on an antique unix system from the 1970s or 1980s, there is very little reason to use expr. Expr is an external program used by bourne shell (i.e.

It uses expr external program with the help of backtick. Nov 26, 20241 expr is a command line tool, it is independent from the bash. Expr match unauthenticated123 '^(unauthenticated|authenticated).*' it outputs 0.

Dec 2, 2015man expr says the "string : Pattern" expression is "anchored", and then in the info page (info coreutils 'expr invocation') you can read: As suggested it works fine but what if i wanted to use expr instead of ( ()).

I note that expr is considered archaic and obsolete.