Executes a system command and returns the exit code.
Optional with head constraint
Multiple optional arguments
Run["echo hello"]
→ hello
0Run["exit 0"]
→ 0Run["exit 1"]
→ 256f[x_] := x^2; f[3]
→ 9f[x_] := x^2; f[5]
→ 25f[x_] := x + 1; f[10]
→ 11f[x_:0] := x + 1; f[]
→ 1f[x_:0] := x + 1; f[5]
→ 6g[q_List: {}, n_] := {q, n}; g[5]
→ {{}, 5}g[q_List: {}, n_] := {q, n}; g[{1, 2}, 3]
→ {{1, 2}, 3}f[a_:0, b_, c_:99] := {a, b, c}; f[5]
→ {0, 5, 99}f[a_:0, b_, c_:99] := {a, b, c}; f[1, 5]
→ {1, 5, 99}