d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Describe how to prevent *.core files from being created using ulimit.

Browse Source 
While here, pet mandoc.

Reviewed by:	eadler (previous revision), jilles (previous revision), mat (mentor)
Approved by:	manpages (jilles), mat (mentor)
Differential Revision:	https://reviews.freebsd.org/D15609
This commit is contained in:
0mp 2018-07-19 13:09:29 +00:00
parent 9146ab42b9
commit 632f81c504
1 changed files with 24 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
bin/sh/sh.1
View File

@ -32,7 +32,7 @@
.\" from: @(#)sh.1 8.6 (Berkeley) 5/4/95 .\" from: @(#)sh.1 8.6 (Berkeley) 5/4/95
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd October 8, 2016 .Dd July 19, 2018
.Dt SH 1 .Dt SH 1
.Os .Os
.Sh NAME .Sh NAME
@ -69,8 +69,7 @@ is close to the
.St -p1003.1 .St -p1003.1
specification for the shell. specification for the shell.
It only supports features It only supports features
designated by designated by POSIX,
.Tn POSIX ,
plus a few Berkeley extensions. plus a few Berkeley extensions.
This man page is not intended to be a tutorial nor a complete This man page is not intended to be a tutorial nor a complete
specification of the shell. specification of the shell.
@ -248,9 +247,7 @@ particularly in larger scripts.
.It Fl f Li noglob .It Fl f Li noglob
Disable pathname expansion. Disable pathname expansion.
.It Fl h Li trackall .It Fl h Li trackall
A do-nothing option for A do-nothing option for POSIX compliance.
.Tn POSIX
compliance.
.It Fl I Li ignoreeof .It Fl I Li ignoreeof
Ignore Ignore
.Dv EOF Ap s .Dv EOF Ap s
@ -344,9 +341,7 @@ variable subjected to parameter expansion and arithmetic expansion)
to standard error before it is executed. to standard error before it is executed.
Useful for debugging. Useful for debugging.
.It Li nolog .It Li nolog
Another do-nothing option for Another do-nothing option for POSIX compliance.
.Tn POSIX
compliance.
It only has a long name. It only has a long name.
.El .El
.Pp .Pp
@ -409,7 +404,7 @@ The word starting with
.Ql # .Ql #
and the rest of the line are ignored. and the rest of the line are ignored.
.Pp .Pp
.Tn ASCII ASCII
.Dv NUL .Dv NUL
characters (character code 0) are not allowed in shell input. characters (character code 0) are not allowed in shell input.
.Ss Quoting .Ss Quoting
@ -447,9 +442,7 @@ If
.Ar c .Ar c
is a backslash, it must be doubled. is a backslash, it must be doubled.
.It \ee .It \ee
The ESC character The ESC character (ASCII 0x1b)
.Tn ( ASCII
0x1b)
.It \ef .It \ef
Formfeed Formfeed
.It \en .It \en
@ -745,9 +738,7 @@ passing the arguments and the environment to the program.
If the program is not a normal executable file If the program is not a normal executable file
(i.e., if it does not begin with the (i.e., if it does not begin with the
.Dq "magic number" .Dq "magic number"
whose whose ASCII representation is
.Tn ASCII
representation is
.Dq Li #! , .Dq Li #! ,
resulting in an resulting in an
.Er ENOEXEC .Er ENOEXEC
@ -1064,11 +1055,16 @@ command.
.Ss Grouping Commands Together .Ss Grouping Commands Together
Commands may be grouped by writing either Commands may be grouped by writing either
.Pp .Pp
.D1 Li \&( Ns Ar list Ns Li \%) .Sm off
.Bd -literal -offset -ident
.Po Ar list Pc
.Ed
.Sm on
.Pp .Pp
or or
.Pp .Bd -literal -offset -ident
.D1 Li { Ar list Ns Li \&; } .No { Ar list ; }
.Ed
.Pp .Pp
The first form executes the commands in a subshell environment. The first form executes the commands in a subshell environment.
A subshell environment has its own copy of: A subshell environment has its own copy of:
@ -1750,11 +1746,11 @@ and contain integer constants.
.It Unary operators .It Unary operators
.Li "! ~ + -" .Li "! ~ + -"
.It Binary operators .It Binary operators
.Li "* / % + - << >> < <= > >= == != & ^ | && ||" .Li "* / % + - << >> < <= > >= == != & ^ | && ||"\&
.It Assignment operators .It Assignment operators
.Li "= += -= *= /= %= <<= >>= &= ^= |=" .Li "= += -= *= /= %= <<= >>= &= ^= |="
.It Conditional operator .It Conditional operator
.Li "? :" .Li "? :"\&
.El .El
.Pp .Pp
The result of the expression is substituted in decimal. The result of the expression is substituted in decimal.
@ -1862,7 +1858,7 @@ A locale-dependent range of characters may be specified using a minus sign.
A named class of characters (see A named class of characters (see
.Xr wctype 3 ) .Xr wctype 3 )
may be specified by surrounding the name with may be specified by surrounding the name with
.Ql \&[: .Ql \&[:\&
and and
.Ql :\&] . .Ql :\&] .
For example, For example,
@ -2099,9 +2095,7 @@ Backspace
Suppress the trailing newline (this has the side-effect of truncating the Suppress the trailing newline (this has the side-effect of truncating the
line if it is not the last character) line if it is not the last character)
.It \ee .It \ee
The ESC character The ESC character (ASCII 0x1b)
.Tn ( ASCII
0x1b)
.It \ef .It \ef
Formfeed Formfeed
.It \en .It \en
@ -2301,8 +2295,7 @@ Move the specified
.Ar job .Ar job
or the current job to the foreground. or the current job to the foreground.
.It Ic getopts Ar optstring var .It Ic getopts Ar optstring var
The The POSIX
.Tn POSIX
.Ic getopts .Ic getopts
command. command.
The The
@ -2415,7 +2408,7 @@ read from the standard input.
The trailing newline The trailing newline
is deleted from the line and the line is split as is deleted from the line and the line is split as
described in the section on described in the section on
.Sx White Space Splitting (Field Splitting) .Sx White Space Splitting (Field Splitting)\&
above, and above, and
the pieces are assigned to the variables in order. the pieces are assigned to the variables in order.
If there are more pieces than variables, the remaining If there are more pieces than variables, the remaining
@ -2663,6 +2656,9 @@ They are mutually exclusive.
The maximum size of socket buffer usage, in bytes. The maximum size of socket buffer usage, in bytes.
.It Fl c Ar coredumpsize .It Fl c Ar coredumpsize
The maximal size of core dump files, in 512-byte blocks. The maximal size of core dump files, in 512-byte blocks.
Setting
.Ar coredumpsize
to 0 prevents core dump files from being created.
.It Fl d Ar datasize .It Fl d Ar datasize
The maximal size of the data segment of a process, in kilobytes. The maximal size of the data segment of a process, in kilobytes.
.It Fl f Ar filesize .It Fl f Ar filesize