语法:
mktemp [OPTION]... [TEMPLATE]
Create a temporary file or directory, safely, and print its name.
TEMPLATE must contain at least 3 consecutive ‘X‘s in last component.
If TEMPLATE is not specified, use tmp.XXXXXXXXXX, and --tmpdir is implied.
Files are created u+rw, and directories u+rwx, minus umask restrictions.
安全的创建临时文件或目录并输出创建的文件名.
如果需要指定最后部分的[TEMPLATE],它必须包含至少3个连续的X字符
如果没有指定[TEMPLATE] ,则默认使用tmp.XXXXXXXXXX (连续10个X字符)
创建的临时文件和目录默认在/tmp下
通过mktemp命令创建的临时文件的默认权限为u+rw,临时目录权限为u+rwx
-d, --directory
create a directory, not a file
//创建一个目录
-u, --dry-run
do not create anything; merely print a name (unsafe)
//仅打印文件名不创建任何文件或目录
-q, --quiet
suppress diagnostics about file/dir-creation failure
--suffix=SUFF
append SUFF to TEMPLATE; SUFF must not contain a slash. This
option is implied if TEMPLATE does not end in X
//指定TEMPLATE的后缀名,不能包含斜线.
//也可以直接加上除X字符以外的任意字符后缀作为TEMPLATE,两者等效
-p DIR, --tmpdir[=DIR]
interpret TEMPLATE relative to DIR; if DIR is not specified, use
$TMPDIR if set, else /tmp. With this option, TEMPLATE must not
be an absolute name; unlike with -t, TEMPLATE may contain
slashes, but mktemp creates only the final component
//指定要创建的临时文件的路径,不指定则为/tmp.
//TEMPLATE可以包含路径.但指定了DIR后,TEMPLATE不能再包含绝对路径
-t interpret TEMPLATE as a single file name component, relative to
a directory: $TMPDIR, if set; else the directory specified via
-p; else /tmp [deprecated] //官方已不赞成使用
--help display this help and exit
--version
output version information and exit