1 | ## oils_failures_allowed: 2
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2 | ## compare_shells: dash bash mksh
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3 |
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4 | # Job control constructs:
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5 | # & terminator (instead of ;)
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6 | # $! -- last PID
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7 | # wait builtin (wait -n waits for next)
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8 | #
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9 | # Only interactive:
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10 | # fg
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11 | # bg
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12 | # %1 -- current job
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13 |
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14 | #### wait with nothing to wait for
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15 | wait
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16 | ## status: 0
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17 |
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18 | #### wait -n with nothing to wait for
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19 | # The 127 is STILL overloaded. Copying bash for now.
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20 | wait -n
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21 | ## status: 127
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22 | ## N-I dash status: 2
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23 | ## N-I mksh status: 1
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24 |
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25 | #### wait with jobspec syntax %nonexistent
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26 | wait %nonexistent
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27 | ## status: 127
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28 | ## OK dash status: 2
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29 |
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30 | #### wait with invalid PID
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31 | wait 12345678
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32 | ## status: 127
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33 |
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34 | #### wait with invalid arg
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35 | wait zzz
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36 | ## status: 2
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37 | ## OK bash status: 1
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38 | # mksh confuses a syntax error with 'command not found'!
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39 | ## BUG mksh status: 127
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40 |
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41 | #### Builtin in background
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42 | echo async &
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43 | wait
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44 | ## stdout: async
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45 |
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46 | #### External command in background
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47 | sleep 0.01 &
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48 | wait
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49 | ## stdout-json: ""
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50 |
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51 | #### Pipeline in Background
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52 | echo hi | { exit 99; } &
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53 | wait $!
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54 | echo status=$?
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55 | ## stdout: status=99
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56 |
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57 | #### Wait for job doesn't support PIPESTATUS
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58 |
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59 | # foreground works
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60 | { echo hi; exit 55; } | false
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61 | echo status=$? pipestatus=${PIPESTATUS[@]}
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62 |
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63 | { echo hi; exit 55; } | false &
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64 | echo status=$? pipestatus=${PIPESTATUS[@]}
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65 |
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66 | # Hm pipestatus doesn't work
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67 | wait %+
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68 | #wait %1
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69 | #wait $!
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70 | echo status=$? pipestatus=${PIPESTATUS[@]}
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71 |
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72 | ## STDOUT:
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73 | status=1 pipestatus=55 1
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74 | status=0 pipestatus=0
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75 | status=1 pipestatus=1
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76 | ## END
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77 | ## N-I dash status: 2
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78 | ## N-I dash stdout-json: ""
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79 |
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80 | #### Brace group in background, wait all
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81 | { sleep 0.09; exit 9; } &
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82 | { sleep 0.07; exit 7; } &
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83 | wait # wait for all gives 0
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84 | echo "status=$?"
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85 | ## stdout: status=0
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86 |
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87 | #### Wait on background process PID
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88 | { sleep 0.09; exit 9; } &
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89 | pid1=$!
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90 | { sleep 0.07; exit 7; } &
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91 | pid2=$!
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92 | wait $pid2
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93 | echo "status=$?"
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94 | wait $pid1
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95 | echo "status=$?"
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96 | ## stdout-json: "status=7\nstatus=9\n"
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97 |
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98 | #### Wait on multiple specific IDs returns last status
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99 | { sleep 0.08; exit 8; } &
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100 | jid1=$!
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101 | { sleep 0.09; exit 9; } &
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102 | jid2=$!
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103 | { sleep 0.07; exit 7; } &
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104 | jid3=$!
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105 | wait $jid1 $jid2 $jid3 # NOTE: not using %1 %2 %3 syntax on purpose
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106 | echo "status=$?" # third job I think
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107 | ## stdout: status=7
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108 |
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109 | #### wait -n
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110 | case $SH in (dash|mksh) return ;; esac
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111 |
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112 | { sleep 0.09; exit 9; } &
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113 | { sleep 0.03; exit 3; } &
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114 | wait -n
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115 | echo "status=$?"
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116 | wait -n
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117 | echo "status=$?"
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118 | ## STDOUT:
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119 | status=3
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120 | status=9
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121 | ## END
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122 | ## N-I dash/mksh stdout-json: ""
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123 |
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124 | #### Async for loop
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125 | for i in 1 2 3; do
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126 | echo $i
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127 | sleep 0.0$i
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128 | done &
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129 | wait
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130 | ## stdout-json: "1\n2\n3\n"
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131 | ## status: 0
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132 |
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133 | #### Background process doesn't affect parent
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134 | echo ${foo=1}
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135 | echo $foo
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136 | echo ${bar=2} &
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137 | wait
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138 | echo $bar # bar is NOT SET in the parent process
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139 | ## stdout-json: "1\n1\n2\n\n"
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140 |
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141 | #### Background process and then a singleton pipeline
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142 |
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143 | # This was inspired by #416, although that symptom there was timing, so it's
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144 | # technically not a regression test. It's hard to test timing.
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145 |
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146 | { sleep 0.1; exit 42; } &
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147 | echo begin
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148 | ! true
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149 | echo end
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150 | wait $!
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151 | echo status=$?
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152 | ## STDOUT:
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153 | begin
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154 | end
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155 | status=42
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156 | ## END
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157 |
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158 | #### jobs prints one line per job
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159 | sleep 0.1 &
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160 | sleep 0.1 | cat &
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161 |
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162 | # dash doesn't print if it's not a terminal?
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163 | jobs | wc -l
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164 |
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165 | ## STDOUT:
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166 | 2
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167 | ## END
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168 | ## BUG dash STDOUT:
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169 | 0
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170 | ## END
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171 |
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172 | #### jobs -p prints one line per job
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173 | sleep 0.1 &
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174 | sleep 0.1 | cat &
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175 |
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176 | jobs -p > tmp.txt
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177 |
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178 | cat tmp.txt | wc -l # 2 lines, one for each job
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179 | cat tmp.txt | wc -w # each line is a single "word"
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180 |
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181 | ## STDOUT:
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182 | 2
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183 | 2
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184 | ## END
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