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1 <!-- Creator : groff version 1.22.3 -->
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3 "http://www.w3.org/TR/html4/loose.dtd">
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4 <html>
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5 <head>
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6 <meta name="generator" content="groff -Thtml, see www.gnu.org">
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7 <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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8 <meta name="Content-Style" content="text/css">
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9 <style type="text/css">
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10 p { margin-top: 0; margin-bottom: 0; vertical-align: top }
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13 h1 { text-align: center }
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14 </style>
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15 <title>ENVSUBST</title>
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16
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17 </head>
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18 <body>
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19
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20 <h1 align="center">ENVSUBST</h1>
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21
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22 <a href="#NAME">NAME</a><br>
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23 <a href="#SYNOPSIS">SYNOPSIS</a><br>
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24 <a href="#DESCRIPTION">DESCRIPTION</a><br>
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25 <a href="#AUTHOR">AUTHOR</a><br>
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26 <a href="#REPORTING BUGS">REPORTING BUGS</a><br>
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27 <a href="#COPYRIGHT">COPYRIGHT</a><br>
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28 <a href="#SEE ALSO">SEE ALSO</a><br>
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29
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30 <hr>
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31
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32
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33 <h2>NAME
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34 <a name="NAME"></a>
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35 </h2>
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36
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37
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38 <p style="margin-left:11%; margin-top: 1em">envsubst
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39 - substitutes environment variables in shell format
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40 strings</p>
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41
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42 <h2>SYNOPSIS
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43 <a name="SYNOPSIS"></a>
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44 </h2>
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45
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46
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47
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48 <p style="margin-left:11%; margin-top: 1em"><b>envsubst</b>
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49 [<i>OPTION</i>] [<i>SHELL-FORMAT</i>]</p>
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50
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51 <h2>DESCRIPTION
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52 <a name="DESCRIPTION"></a>
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53 </h2>
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54
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55
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56 <p style="margin-left:11%; margin-top: 1em">Substitutes the
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57 values of environment variables.</p>
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58
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59 <p style="margin-left:11%; margin-top: 1em"><b>Operation
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60 mode: <br>
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61 -v</b>, <b>--variables</b></p>
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62
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63 <p style="margin-left:22%;">output the variables occurring
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64 in SHELL-FORMAT</p>
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65
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66 <p style="margin-left:11%; margin-top: 1em"><b>Informative
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67 output: <br>
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68 -h</b>, <b>--help</b></p>
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69
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70 <p style="margin-left:22%;">display this help and exit</p>
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71
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72 <p style="margin-left:11%;"><b>-V</b>,
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73 <b>--version</b></p>
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74
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75 <p style="margin-left:22%;">output version information and
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76 exit</p>
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77
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78 <p style="margin-left:11%; margin-top: 1em">In normal
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79 operation mode, standard input is copied to standard output,
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80 with references to environment variables of the form
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81 $VARIABLE or ${VARIABLE} being replaced with the
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82 corresponding values. If a SHELL-FORMAT is given, only
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83 those environment variables that are referenced in
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84 SHELL-FORMAT are substituted; otherwise all
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85 environment variables references occurring in standard input
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86 are substituted.</p>
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87
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88 <p style="margin-left:11%; margin-top: 1em">When
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89 <b>--variables</b> is used, standard input is
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90 ignored, and the output consists of the environment
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91 variables that are referenced in SHELL-FORMAT, one per
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92 line.</p>
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93
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94 <h2>AUTHOR
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95 <a name="AUTHOR"></a>
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96 </h2>
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97
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98
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99 <p style="margin-left:11%; margin-top: 1em">Written by
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100 Bruno Haible.</p>
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101
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102 <h2>REPORTING BUGS
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103 <a name="REPORTING BUGS"></a>
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104 </h2>
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105
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106
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107 <p style="margin-left:11%; margin-top: 1em">Report bugs in
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108 the bug tracker at
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109 <https://savannah.gnu.org/projects/gettext> or by
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110 email to <bug-gettext@gnu.org>.</p>
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111
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112 <h2>COPYRIGHT
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113 <a name="COPYRIGHT"></a>
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114 </h2>
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115
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116
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117 <p style="margin-left:11%; margin-top: 1em">Copyright
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118 © 2003-2023 Free Software Foundation, Inc.
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119 License GPLv3+: GNU GPL version 3 or later
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120 <https://gnu.org/licenses/gpl.html> <br>
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121 This is free software: you are free to change and
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122 redistribute it. There is NO WARRANTY, to the extent
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123 permitted by law.</p>
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124
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125 <h2>SEE ALSO
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126 <a name="SEE ALSO"></a>
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127 </h2>
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128
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129
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130 <p style="margin-left:11%; margin-top: 1em">The full
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131 documentation for <b>envsubst</b> is maintained as a Texinfo
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132 manual. If the <b>info</b> and <b>envsubst</b> programs are
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133 properly installed at your site, the command</p>
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134
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135 <p style="margin-left:22%; margin-top: 1em"><b>info
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136 envsubst</b></p>
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137
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138 <p style="margin-left:11%; margin-top: 1em">should give you
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139 access to the complete manual.</p>
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140 <hr>
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141 </body>
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142 </html>
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