Commit | Line | Data |
---|---|---|
32424d04 C |
1 | TEST(1) BSD Reference Manual TEST(1) |
2 | ||
3 | N\bNA\bAM\bME\bE | |
4 | t\bte\bes\bst\bt - condition evaluation utility | |
5 | ||
6 | S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS | |
7 | t\bte\bes\bst\bt _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn | |
8 | ||
9 | D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN | |
10 | The t\bte\bes\bst\bt utility evaluates the expression and, if it evaluates to true, | |
11 | returns a zero (true) exit status; otherwise it returns 1 (false). If | |
12 | there is no expression, test also returns 1 (false). | |
13 | ||
14 | All operators and flags are separate arguments to the t\bte\bes\bst\bt utility. | |
15 | ||
16 | The following primaries are used to construct expression: | |
17 | ||
18 | -\b-b\bb _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and is a block special file. | |
19 | ||
20 | -\b-c\bc _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and is a character special file. | |
21 | ||
22 | -\b-d\bd _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and is a directory. | |
23 | ||
24 | -\b-e\be _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists (regardless of type). | |
25 | ||
26 | -\b-f\bf _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and is a regular file. | |
27 | ||
28 | -\b-g\bg _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and its set group ID flag is set. | |
29 | ||
30 | -\b-h\bh _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and is a symbolic link. | |
31 | ||
32 | -\b-n\bn _\bs_\bt_\br_\bi_\bn_\bg True if the length of _\bs_\bt_\br_\bi_\bn_\bg is nonzero. | |
33 | ||
34 | -\b-p\bp _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be is a named pipe (FIFO). | |
35 | ||
36 | -\b-r\br _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be _\be_\bx_\bi_\bs_\bt_\bs _\ba_\bn_\bd _\bi_\bs _\br_\be_\ba_\bd_\ba_\bb_\bl_\be_\b. | |
37 | ||
38 | -\b-s\bs _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and has a size greater than zero. | |
39 | ||
40 | -\b-t\bt _\b[_\bf_\bi_\bl_\be_\b__\bd_\be_\bs_\bc_\br_\bi_\bp_\bt_\bo_\br_\b] | |
41 | True if the file whose file descriptor number is | |
42 | _\bf_\bi_\bl_\be_\b__\bd_\be_\bs_\bc_\br_\bi_\bp_\bt_\bo_\br (default 1) is open and is associated with | |
43 | a terminal. | |
44 | ||
45 | -\b-u\bu _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and its set user ID flag is set. | |
46 | ||
47 | -\b-w\bw _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and is writable. True indicates only | |
48 | that the write flag is on. The file is not writable on a | |
49 | read-only file system even if this test indicates true. | |
50 | ||
51 | -\b-x\bx _\bf_\bi_\bl_\be True if _\bf_\bi_\bl_\be exists and is executable. True indicates only | |
52 | that the execute flag is on. If _\bf_\bi_\bl_\be is a directory, true | |
53 | indicates that _\bf_\bi_\bl_\be can be searched. | |
54 | ||
55 | -\b-z\bz _\bs_\bt_\br_\bi_\bn_\bg True if the length of _\bs_\bt_\br_\bi_\bn_\bg is zero. | |
56 | ||
57 | _\bs_\bt_\br_\bi_\bn_\bg True if _\bs_\bt_\br_\bi_\bn_\bg is not the null string. | |
58 | ||
59 | _\bs_\b1 =\b= _\bs_\b2 True if the strings _\bs_\b1 and _\bs_\b2 are identical. | |
60 | ||
61 | _\bs_\b1 !\b!=\b= _\bs_\b2 True if the strings _\bs_\b1 and _\bs_\b2 are not identical. | |
62 | ||
63 | _\bn_\b1 -\b-e\beq\bq _\bn_\b2 True if the integers _\bn_\b1 and _\bn_\b2 are algebraically equal. | |
64 | ||
65 | _\bn_\b1 -\b-n\bne\be _\bn_\b2 True if the integers _\bn_\b1 and _\bn_\b2 are not algebraically equal. | |
66 | ||
67 | ||
68 | _\bn_\b1 -\b-g\bgt\bt _\bn_\b2 True if the integer _\bn_\b1 is algebraically greater than the | |
69 | integer _\bn_\b2. | |
70 | ||
71 | _\bn_\b1 -\b-g\bge\be _\bn_\b2 True if the integer _\bn_\b1 is algebraically greater than or | |
72 | equal to the integer _\bn_\b2. | |
73 | ||
74 | _\bn_\b1 -\b-l\blt\bt _\bn_\b2 True if the integer _\bn_\b1 is algebraically less than the inte- | |
75 | ger _\bn_\b2. | |
76 | ||
77 | _\bn_\b1 -\b-l\ble\be _\bn_\b2 True if the integer _\bn_\b1 is algebraically less than or equal | |
78 | to the integer _\bn_\b2. | |
79 | ||
80 | These primaries can be combined with the following operators: | |
81 | ||
82 | !\b! _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn True if _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn is false. | |
83 | ||
84 | _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn_\b1 -\b-a\ba _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn_\b2 | |
85 | True if both _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn_\b1 and _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn_\b2 are true. | |
86 | ||
87 | _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn_\b1 -\b-o\bo _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn_\b2 | |
88 | True if either _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn_\b1 or _\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn_\b2 are true. | |
89 | ||
90 | (\b(_\be_\bx_\bp_\br_\be_\bs_\bs_\bi_\bo_\bn)\b) True if expression is true. | |
91 | ||
92 | The -\b-a\ba operator has higher precedence than the -\b-o\bo operator. | |
93 | ||
94 | G\bGR\bRA\bAM\bMM\bMA\bAR\bR A\bAM\bMB\bBI\bIG\bGU\bUI\bIT\bTY\bY | |
95 | The t\bte\bes\bst\bt grammar is inherently ambiguous. In order to assure a degree of | |
96 | consistency, the cases described in the IEEE Std1003.2 (``POSIX''), sec- | |
97 | tion D11.2/4.62.4, standard are evaluated consistently according to the | |
98 | rules specified in the standards document. All other cases are subject | |
99 | to the ambiguity in the command semantics. | |
100 | ||
101 | R\bRE\bET\bTU\bUR\bRN\bN V\bVA\bAL\bLU\bUE\bES\bS | |
102 | The t\bte\bes\bst\bt utility exits with one of the following values: | |
103 | ||
104 | 0 expression evaluated to true. | |
105 | ||
106 | 1 expression evaluated to false or expression was missing. | |
107 | ||
108 | >1 An error occurred. | |
109 | ||
110 | S\bST\bTA\bAN\bND\bDA\bAR\bRD\bDS\bS | |
111 | The t\bte\bes\bst\bt function is expected to be IEEE Std1003.2 (``POSIX'') compati- | |
112 | ble. | |
113 | ||
114 | 4.4BSD May 31, 1993 2 |