1 | #
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2 | # Tests for pipelines.
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3 | # NOTE: Grammatically, ! is part of the pipeline:
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4 | #
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5 | # pipeline : pipe_sequence
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6 | # | Bang pipe_sequence
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7 |
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8 | #### Brace group in pipeline
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9 | { echo one; echo two; } | tac
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10 | ## stdout-json: "two\none\n"
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11 |
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12 | #### For loop starts pipeline
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13 | for w in one two; do
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14 | echo $w
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15 | done | tac
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16 | ## stdout-json: "two\none\n"
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17 |
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18 | #### While Loop ends pipeline
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19 | seq 3 | while read i
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20 | do
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21 | echo ".$i"
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22 | done
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23 | ## stdout-json: ".1\n.2\n.3\n"
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24 |
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25 | #### Redirect in Pipeline
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26 | echo hi 1>&2 | wc -l
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27 | ## stdout: 0
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28 | ## BUG zsh stdout: 1
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29 |
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30 | #### Pipeline comments
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31 | echo abcd | # input
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32 | # blank line
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33 | tr a-z A-Z # transform
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34 | ## stdout: ABCD
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35 |
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36 | #### Exit code is last status
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37 | echo a | egrep '[0-9]+'
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38 | ## status: 1
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39 |
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40 | #### PIPESTATUS
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41 | return3() {
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42 | return 3
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43 | }
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44 | { sleep 0.03; exit 1; } | { sleep 0.02; exit 2; } | { sleep 0.01; return3; }
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45 | echo ${PIPESTATUS[@]}
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46 | ## stdout: 1 2 3
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47 | ## N-I dash status: 2
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48 | ## N-I dash stdout-json: ""
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49 | ## N-I zsh status: 0
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50 | ## N-I zsh stdout-json: "\n"
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51 |
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52 | #### PIPESTATUS is set on simple commands, but NOT in OSH
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53 | case $SH in dash|zsh) exit ;; esac
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54 |
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55 | false
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56 | echo pipestatus ${PIPESTATUS[@]}
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57 |
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58 | ## STDOUT:
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59 | pipestatus 1
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60 | ## END
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61 | ## OK osh STDOUT:
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62 | pipestatus
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63 | ## END
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64 | ## N-I dash/zsh STDOUT:
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65 | ## END
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66 |
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67 | #### PIPESTATUS with shopt -s lastpipe
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68 | shopt -s lastpipe
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69 | return3() {
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70 | return 3
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71 | }
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72 | { sleep 0.03; exit 1; } | { sleep 0.02; exit 2; } | { sleep 0.01; return3; }
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73 | echo ${PIPESTATUS[@]}
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74 | ## stdout: 1 2 3
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75 | ## N-I dash status: 2
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76 | ## N-I dash stdout-json: ""
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77 | ## N-I zsh status: 0
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78 | ## N-I zsh stdout-json: "\n"
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79 |
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80 | #### |&
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81 | stdout_stderr.py |& cat
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82 | ## STDOUT:
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83 | STDERR
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84 | STDOUT
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85 | ## END
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86 | ## status: 0
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87 | ## N-I dash/mksh stdout-json: ""
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88 | ## N-I dash status: 2
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89 | ## N-I osh stdout-json: ""
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90 | ## N-I osh status: 1
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91 |
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92 | #### ! turns non-zero into zero
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93 | ! $SH -c 'exit 42'; echo $?
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94 | ## stdout: 0
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95 | ## status: 0
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96 |
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97 | #### ! turns zero into 1
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98 | ! $SH -c 'exit 0'; echo $?
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99 | ## stdout: 1
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100 | ## status: 0
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101 |
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102 | #### ! in if
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103 | if ! echo hi; then
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104 | echo TRUE
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105 | else
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106 | echo FALSE
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107 | fi
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108 | ## stdout-json: "hi\nFALSE\n"
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109 | ## status: 0
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110 |
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111 | #### ! with ||
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112 | ! echo hi || echo FAILED
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113 | ## stdout-json: "hi\nFAILED\n"
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114 | ## status: 0
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115 |
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116 | #### ! with { }
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117 | ! { echo 1; echo 2; } || echo FAILED
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118 | ## stdout-json: "1\n2\nFAILED\n"
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119 | ## status: 0
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120 |
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121 | #### ! with ( )
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122 | ! ( echo 1; echo 2 ) || echo FAILED
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123 | ## stdout-json: "1\n2\nFAILED\n"
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124 | ## status: 0
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125 |
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126 | #### ! is not a command
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127 | v='!'
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128 | $v echo hi
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129 | ## status: 127
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130 |
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131 | #### Evaluation of argv[0] in pipeline occurs in child
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132 | ${cmd=echo} hi | wc -l
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133 | echo "cmd=$cmd"
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134 | ## STDOUT:
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135 | 1
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136 | cmd=
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137 | ## END
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138 | ## BUG zsh STDOUT:
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139 | 1
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140 | cmd=echo
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141 | ## END
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142 |
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143 | #### bash/dash/mksh run the last command is run in its own process
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144 | echo hi | read line
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145 | echo "line=$line"
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146 | ## stdout: line=hi
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147 | ## OK bash/dash/mksh stdout: line=
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148 |
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149 | #### shopt -s lastpipe (always on in OSH)
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150 | shopt -s lastpipe
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151 | echo hi | read line
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152 | echo "line=$line"
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153 | ## stdout: line=hi
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154 | ## N-I dash/mksh stdout: line=
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155 |
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156 | #### shopt -s lastpipe (always on in OSH)
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157 | shopt -s lastpipe
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158 | i=0
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159 | seq 3 | while read line; do
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160 | (( i++ ))
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161 | done
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162 | echo i=$i
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163 | ## stdout: i=3
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164 | ## N-I dash/mksh stdout: i=0
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165 |
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166 |
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167 | #### SIGPIPE causes pipeline to die (regression for issue #295)
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168 | cat /dev/urandom | sleep 0.1
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169 | echo ${PIPESTATUS[@]}
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170 |
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171 | # hm bash gives '1 0' which seems wrong
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172 |
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173 | ## STDOUT:
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174 | 141 0
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175 | ## END
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176 | ## BUG bash STDOUT:
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177 | 1 0
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178 | ## END
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179 | ## N-I zsh stdout:
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180 | ## N-I dash status: 2
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181 | ## N-I dash stdout-json: ""
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182 |
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183 | #### Nested pipelines
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184 | { sleep 0.1 | seq 3; } | cat
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185 | { sleep 0.1 | seq 10; } | { cat | cat; } | wc -l
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186 | ## STDOUT:
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187 | 1
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188 | 2
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189 | 3
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190 | 10
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191 | ## END
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192 |
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193 | #### Pipeline in eval
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194 | ls /dev/null | eval 'cat | cat' | wc -l
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195 | ## STDOUT:
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196 | 1
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197 | ## END
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