* [devel] Q: shell "source" builtin
@ 2005-07-22 23:14 Alexey Tourbin
2005-07-22 23:50 ` Dmitry V. Levin
0 siblings, 1 reply; 3+ messages in thread
From: Alexey Tourbin @ 2005-07-22 23:14 UTC (permalink / raw)
To: devel
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Как определить, запускается ли скрипт exec'ом или загружается через source?
Т.е. можно ли внутри скрипта отличить, запускают его или сорсят?
$ ./script
$ . ./script
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* Re: [devel] Q: shell "source" builtin
2005-07-22 23:14 [devel] Q: shell "source" builtin Alexey Tourbin
@ 2005-07-22 23:50 ` Dmitry V. Levin
2005-07-28 1:34 ` [devel] " Alexey Tourbin
0 siblings, 1 reply; 3+ messages in thread
From: Dmitry V. Levin @ 2005-07-22 23:50 UTC (permalink / raw)
To: ALT Devel discussion list
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On Sat, Jul 23, 2005 at 03:14:25AM +0400, Alexey Tourbin wrote:
> Как определить, запускается ли скрипт exec'ом или загружается через source?
> Т.е. можно ли внутри скрипта отличить, запускают его или сорсят?
>
> $ ./script
> $ . ./script
Вообще говоря, нет.
Но в некоторых случаях можно попробовать:
$ cat script.sh
#!/bin/sh
echo "\$-=$-"
echo "\$0=$0"
$ ./script.sh
$-=hB
$0=./script.sh
$ . ./script.sh
$-=bhimBH
$0=-bash
Зато можно сделать так, чтобы просто запустить было затруднительно:
$ cat script.sh
#!/bin/sh /
echo "\$-=$-"
echo "\$0=$0"
$ ./script.sh
/: /: is a directory
--
ldv
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* [devel] Re: Q: shell "source" builtin
2005-07-22 23:50 ` Dmitry V. Levin
@ 2005-07-28 1:34 ` Alexey Tourbin
0 siblings, 0 replies; 3+ messages in thread
From: Alexey Tourbin @ 2005-07-28 1:34 UTC (permalink / raw)
To: ALT Devel discussion list
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On Sat, Jul 23, 2005 at 03:50:50AM +0400, Dmitry V. Levin wrote:
> On Sat, Jul 23, 2005 at 03:14:25AM +0400, Alexey Tourbin wrote:
> > Как определить, запускается ли скрипт exec'ом или загружается через source?
> > Т.е. можно ли внутри скрипта отличить, запускают его или сорсят?
> >
> > $ ./script
> > $ . ./script
>
> Вообще говоря, нет.
Эх, а в bash-2.05b/builtins/evalfile.c такая переменная хорошая есть,
67 /* How many `levels' of sourced files we have. */
68 int sourcelevel = 0;
плохо что снаружи её не видно.
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end of thread, other threads:[~2005-07-28 1:34 UTC | newest]
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2005-07-22 23:14 [devel] Q: shell "source" builtin Alexey Tourbin
2005-07-22 23:50 ` Dmitry V. Levin
2005-07-28 1:34 ` [devel] " Alexey Tourbin
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