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520.
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Display or set file mode mask. 
Sets the user file-creation mask to MODE. If MODE is omitted, prints
the current value of the mask.
If MODE begins with a digit, it is interpreted as an octal number;
otherwise it is a symbolic mode string like that accepted by chmod(1).
Options:
-p [tab]if MODE is omitted, output in a form that may be reused as input
-S [tab]makes the output symbolic; otherwise an octal number is output
Exit Status:
Returns success unless MODE is invalid or an invalid option is given. |
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[tab] represents a tab character.
Please write it exactly the same way, [tab], in your
translation.
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represents a line break.
Start a new line in the equivalent position in the translation.
|
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|
represents a space character.
Enter a space in the equivalent position in the translation.
|
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显示或设定文件模式掩码。
设定用户文件创建掩码为 <模式>。如果省略 <模式>，则打印当前掩码的值。
如果 <模式> 以数字开头，则按照八进制数进行解释；否则视为一个
chmod(1) 可接受的符号模式串。
选项：
-p [tab]如果省略 <模式>，以可重用作输入的格式输出
-S [tab]以符号形式输出，否则以八进制数格式输出
退出状态：
返回成功，除非使用了无效的 <模式> 或者选项。 |
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Translated by
Wenbin Lv
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Located in
builtins.c:1483
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521.
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Wait for job completion and return exit status.
Waits for the process identified by ID, which may be a process ID or a
job specification, and reports its termination status. If ID is not
given, waits for all currently active child processes, and the return
status is zero. If ID is a a job specification, waits for all processes
in the job's pipeline.
Exit Status:
Returns the status of ID; fails if ID is invalid or an invalid option is
given. |
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represents a line break.
Start a new line in the equivalent position in the translation.
|
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|
represents a space character.
Enter a space in the equivalent position in the translation.
|
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等待任务完成并返回退出状态。
等待以 ID 编号识别的进程，其中ID 可以是进程编号或者任务声明，
并报告它的终止状态。如果 ID 没有给出，则等待所有的当前活跃子
进程，并且返回状态为零。如果 ID 是任务声明，等待任务管道中的
所有进程。
退出状态：
返回 ID 进程的状态；如果使用了无效的 ID 或者选项则失败。 |
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Translated by
Alex Ye
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Located in
builtins.c:1464
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522.
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Wait for process completion and return exit status.
Waits for the specified process and reports its termination status. If
PID is not given, all currently active child processes are waited for,
and the return code is zero. PID must be a process ID.
Exit Status:
Returns the status of ID; fails if ID is invalid or an invalid option is
given. |
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represents a line break.
Start a new line in the equivalent position in the translation.
|
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|
represents a space character.
Enter a space in the equivalent position in the translation.
|
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等待进程完成并且返回退出状态。
等待指定进程并报告它的终止状态。如果
没有提供PID，则当前所有的活跃子进程都会被等待，
并且返回码为零。PID必须为进程号。
退出状态：
返回进程ID的状态；如果ID是无效的进程号或者指定了无效
的选项则失败。 |
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Translated by
Alex Ye
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Located in
builtins.c:1482
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523.
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Execute commands for each member in a list.
The `for' loop executes a sequence of commands for each member in a
list of items. If `in WORDS ...;' is not present, then `in "$@"' is
assumed. For each element in WORDS, NAME is set to that element, and
the COMMANDS are executed.
Exit Status:
Returns the status of the last command executed. |
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represents a line break.
Start a new line in the equivalent position in the translation.
|
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|
represents a space character.
Enter a space in the equivalent position in the translation.
|
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为列表中的每个成员执行命令。
"for" 循环为列表中的每个成员执行一系列的命令。
如果没有 "in 词语 ...;" ，则假定使用 `in "$@"'。对于 <词语> 中的
每个元素，<名称> 被设定为该元素，然后执行 <命令>。
退出状态：
返回最后执行的命令的状态。 |
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Translated by
Wenbin Lv
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Located in
builtins.c:1549
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524.
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Arithmetic for loop.
Equivalent to
[tab](( EXP1 ))
[tab]while (( EXP2 )); do
[tab][tab]COMMANDS
[tab][tab](( EXP3 ))
[tab]done
EXP1, EXP2, and EXP3 are arithmetic expressions. If any expression is
omitted, it behaves as if it evaluates to 1.
Exit Status:
Returns the status of the last command executed. |
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[tab] represents a tab character.
Please write it exactly the same way, [tab], in your
translation.
|
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|
represents a line break.
Start a new line in the equivalent position in the translation.
|
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|
represents a space character.
Enter a space in the equivalent position in the translation.
|
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算术 for 循环。
等价于
[tab](( 表达式1 ))
[tab]while (( 表达式2 )); do
[tab][tab]命令
[tab][tab](( 表达式3 ))
[tab]done
<表达式1>、<表达式2> 和 <表达式3> 都是算术表达式。如果省略任何表达式，
则等价于使用了求值结果为 1 的表达式。
退出状态：
返回最后执行的命令的状态。 |
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Translated by
Wenbin Lv
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Located in
builtins.c:1563
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525.
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Select words from a list and execute commands.
The WORDS are expanded, generating a list of words. The
set of expanded words is printed on the standard error, each
preceded by a number. If `in WORDS' is not present, `in "$@"'
is assumed. The PS3 prompt is then displayed and a line read
from the standard input. If the line consists of the number
corresponding to one of the displayed words, then NAME is set
to that word. If the line is empty, WORDS and the prompt are
redisplayed. If EOF is read, the command completes. Any other
value read causes NAME to be set to null. The line read is saved
in the variable REPLY. COMMANDS are executed after each selection
until a break command is executed.
Exit Status:
Returns the status of the last command executed. |
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represents a line break.
Start a new line in the equivalent position in the translation.
|
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|
represents a space character.
Enter a space in the equivalent position in the translation.
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从列表中选取词并且执行命令。
<词语> 被展开，生成一个词语列表。展开后的词语集合被打印到
标准错误，每个词语前面打印一个数字。如果没有 "in 词语" ，则假定
使用 `in "$@"'。然后，会显示一个 PS3 提示符，并且从标准输入读取
一行。如果该行是所显示的词之一所对应的数字，则 <名称> 被设定为
相应的词。如果该行为空，则会重新显示 <词语> 和提示符。如果读到了
EOF，则命令完成。读入任何其他的值会导致 <名称> 变量被设定为空。
读入的行被存放在变量 REPLY 中。<命令> 会在每次选择之后被执行，
直到执行到 break 命令。
退出状态：
返回最后一个执行的命令的状态。 |
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Translated by
Wenbin Lv
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Located in
builtins.c:1581
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526.
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Report time consumed by pipeline's execution.
Execute PIPELINE and print a summary of the real time, user CPU time,
and system CPU time spent executing PIPELINE when it terminates.
Options:
-p [tab]print the timing summary in the portable Posix format
The value of the TIMEFORMAT variable is used as the output format.
Exit Status:
The return status is the return status of PIPELINE. |
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[tab] represents a tab character.
Please write it exactly the same way, [tab], in your
translation.
|
|
|
represents a line break.
Start a new line in the equivalent position in the translation.
|
|
|
represents a space character.
Enter a space in the equivalent position in the translation.
|
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报告流水线执行消耗的时间。
执行 <流水线> 并且打印 <流水线> 终止时消耗的真实时间、用户 CPU 时间
和系统 CPU 时间的总结。
选项：
-p [tab]用可移植的 POSIX 格式打印用时总结。
使用 TIMEFORMAT 变量的值作为输出格式。
退出状态：
返回状态是 <流水线> 的返回状态。 |
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Translated by
Wenbin Lv
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Located in
builtins.c:1602
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527.
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Execute commands based on pattern matching.
Selectively execute COMMANDS based upon WORD matching PATTERN. The
`|' is used to separate multiple patterns.
Exit Status:
Returns the status of the last command executed. |
|
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represents a line break.
Start a new line in the equivalent position in the translation.
|
|
|
represents a space character.
Enter a space in the equivalent position in the translation.
|
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|
基于模式匹配来执行命令。
根据和 <词语> 匹配的 <模式> ，选择性地执行 <命令>。
"|" 用于分隔多个模式。
退出状态：
返回最后一个执行的命令的状态。 |
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Translated by
Wenbin Lv
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Located in
builtins.c:1619
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528.
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Execute commands based on conditional.
The `if COMMANDS' list is executed. If its exit status is zero, then the
`then COMMANDS' list is executed. Otherwise, each `elif COMMANDS' list is
executed in turn, and if its exit status is zero, the corresponding
`then COMMANDS' list is executed and the if command completes. Otherwise,
the `else COMMANDS' list is executed, if present. The exit status of the
entire construct is the exit status of the last command executed, or zero
if no condition tested true.
Exit Status:
Returns the status of the last command executed. |
|
|
represents a line break.
Start a new line in the equivalent position in the translation.
|
|
|
represents a space character.
Enter a space in the equivalent position in the translation.
|
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|
|
|
根据条件执行命令。
执行 "if 命令" 列表。如果退出状态为零，则执行 "then 命令" 列表。
否则按顺序执行每个 "elif 命令" 列表，如果某一个的退出状态为零，则执行
对应的 "then 命令" 列表，然后 if 命令完成。否则，执行 "else 命令"
列表（如果有的话）。整个结构的退出状态是最后一个执行的命令的状态，
或者如果没有一个条件的测试结果为真，则退出状态为零。
退出状态：
返回最后一个执行的命令的状态。 |
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Translated by
Wenbin Lv
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Located in
builtins.c:1631
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529.
|
|
|
Execute commands as long as a test succeeds.
Expand and execute COMMANDS as long as the final command in the
`while' COMMANDS has an exit status of zero.
Exit Status:
Returns the status of the last command executed. |
|
|
represents a line break.
Start a new line in the equivalent position in the translation.
|
|
|
represents a space character.
Enter a space in the equivalent position in the translation.
|
|
|
|
|
只要测试成功即执行命令。
只要在 `while' COMMANDS 中的最终命令返回结果为0，则
展开并执行 COMMANDS 命令。
退出状态：
返回最后一个执行的命令的状态。 |
|
Translated by
Alex Ye
|
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Located in
builtins.c:1647
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