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author | Burdette Lamar <BurdetteLamar@Yahoo.com> | 2024-01-23 21:43:52 -0600 |
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committer | GitHub <noreply@github.com> | 2024-01-24 12:43:52 +0900 |
commit | df5f2fab938cd020dfdeeb8db46cfaefe57aa6bc (patch) | |
tree | 5e48a49dde149b379b8e7d66f0f40185607a3495 /process.c | |
parent | c16aaf119a8bac0d78b4124ecc097735a7c6ed83 (diff) |
[DOC] Correction for Process.spawn doc
Diffstat (limited to 'process.c')
-rw-r--r-- | process.c | 12 |
1 files changed, 11 insertions, 1 deletions
@@ -4991,7 +4991,9 @@ rb_f_system(int argc, VALUE *argv, VALUE _) * * "Hello! 1\n" * - * Ruby invokes the executable directly, with no shell and no shell expansion. + * Ruby invokes the executable directly. + * This form does not use the shell; + * see below for caveats. * * If one or more +args+ is given, each is an argument or option * to be passed to the executable: @@ -5006,6 +5008,14 @@ rb_f_system(int argc, VALUE *argv, VALUE _) * C* * hello world * + * The 'cmdname, arg1, ...' form does not use the shell. However, + * on different OSes, different things are provided as built-in + * commands. An example of this is 'echo', which is a built-in + * on Windows, but is a normal program on Linux and Mac OS X. + * This means that `Process.spawn 'echo', '%Path%'` will display + * the contents of the `%Path%` environment variable on Windows, + * but `Process.spawn 'echo', '$PATH'` prints the literal '$PATH'. + * * Raises an exception if the new process could not execute. */ |