OpenGrok

6 # The variable OUTPUT gets the output from running the shell command.
7 OUTPUT!=	echo "success"'ful'
8 .if ${OUTPUT} != "successful"
12 # Since 2014-08-20, the output of the shell command may be empty.
15 # an empty output produced the error message "Couldn't read shell's output
20 # reading part of its output.
21 OUTPUT!=	true
22 .if ${OUTPUT} != ""
26 # The output of a shell command that failed is processed nevertheless.
32 OUTPUT!=	echo "failed"; (exit 13)
33 .if ${OUTPUT} != "failed"
37 # A command with empty output may fail as well.
39 OUTPUT!=	exit 13
40 .if ${OUTPUT} != ""
44 # In the output of the command, each newline is replaced with a space.
46 OUTPUT!=	echo "line 1"; echo "line 2"
47 .if ${OUTPUT} != "line 1 line 2"
53 OUTPUT!=	echo "before"; (exit 13); echo "after"
54 .if ${OUTPUT} != "before after"
62 OUTPUT!=	kill $$$$
63 .if ${OUTPUT} != ""
69 OUTPUT!=	/bin/no/such/command
70 .if ${OUTPUT} != ""
74 # The output from the shell's stderr is not captured, it just passes through.
75 OUTPUT!=	echo "stdout"; echo "stderr" 1>&2
76 .if ${OUTPUT} != "stdout"
81 # the command "echo '$$$$'".  The 4 dollar signs are stored in OUTPUT, and
83 OUTPUT!=	echo '$$$$$$$$'
84 .if ${OUTPUT} != "\$\$"
91 OUTPUT!=	echo '$$$$$$$$'

Indexes created Tue Oct 14 01:09:49 GMT 2025