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authorBart Schaefer <barts@users.sourceforge.net>2002-01-06 00:30:13 +0000
committerBart Schaefer <barts@users.sourceforge.net>2002-01-06 00:30:13 +0000
commit05c2b84ad1d9061c7123d7d0c85bf29219cd7d01 (patch)
tree683b962b9677844f9bcc4aa79a10e23dc627a82e /Etc/STD-TODO
parent95abfc0e2ad392a404a0a1f940951afb9aa924a2 (diff)
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Remarks on the "exec" builtin with redirection using the close-on-exec flag
on descriptors.
Diffstat (limited to 'Etc/STD-TODO')
-rw-r--r--Etc/STD-TODO11
1 files changed, 11 insertions, 0 deletions
diff --git a/Etc/STD-TODO b/Etc/STD-TODO
index 4f964e37f..a228dee96 100644
--- a/Etc/STD-TODO
+++ b/Etc/STD-TODO
@@ -58,3 +58,14 @@ the same name as a command in PATH.
 All parameters in ksh are indexed arrays.  That's why $array has to mean
 ${array[0]}, and why subscripts can't be used to extract substrings from
 scalars.
+
+In ksh,
+	exec 3<file
+causes file 3 to be close on exec.  DGK says: "This allows scripts to
+use file descriptors 3-9 without side effects on commands that are
+subsequently executed.
+	command 3< file
+will not use close on exec, and
+	{
+	} 3< file
+will not use close on exec for any commands inside {...}."