resoud false positif dans expansions et redirections

tests/false_positive.sh

@@ -12,9 +12,52 @@ echo $?
 
 #---------------------------------------------
 # Race condition, unpredictable behaviour
+
 echo DOET HET NIET > test1 | cat test1
 
 
+#---------------------------------------------
+# redirection stderr
+
+echo hello > out1.txt > out2.txt > out3.txt 2> err1.txt 2> err2.txt 2> err3.txt
+cat out1.txt out2.txt out3.txt err1.txt err2.txt err3.txt
+
+echo hello >> out1.txt >> out2.txt >> out3.txt 2>> err1.txt 2>> err2.txt 2>> err3.txt
+cat out1.txt out2.txt out3.txt err1.txt err2.txt err3.txt
+
+ls > out1.txt > out2.txt > out3.txt 2> err1.txt 2> err2.txt 2> err3.txt
+cat out1.txt out2.txt out3.txt err1.txt err2.txt err3.txt
+
+ls >> out1.txt >> out2.txt >> out3.txt 2>> err1.txt 2>> err2.txt 2>> err3.txt
+cat out1.txt out2.txt out3.txt err1.txt err2.txt err3.txt
+
+ls no_such_file > out1.txt > out2.txt > out3.txt 2> err1.txt 2> err2.txt 2> err3.txt
+cat out1.txt out2.txt out3.txt err1.txt err2.txt err3.txt
+
+ls no_such_file >> out1.txt >> out2.txt >> out3.txt 2>> err1.txt 2>> err2.txt 2>> err3.txt
+cat out1.txt out2.txt out3.txt err1.txt err2.txt err3.txt
+
+./a.out 3> file3 2> file2 1> file1
+cat file3 file2 file1
+printf '#include<unistd.h>\nint main(){write(1, "fd1\\n", 4);write(2, "fd2\\n", 4);write(3, "fd3\\n", 4);}' > a.c && gcc a.c
+
+./a.out 1> file1 2> file2 3> file3
+cat file1 file2 file3
+printf '#include<unistd.h>\nint main(){write(1, "fd1\\n", 4);write(2, "fd2\\n", 4);write(3, "fd3\\n", 4);}' > a.c && gcc a.c
+
+echo a 1> 1.txt 2> 2.txt 3> 3.txt
+./a.out 1>> 1.txt 2>> 2.txt 3>> 3.txt
+cat 1.txt 2.txt 3.txt
+printf '#include<unistd.h>\nint main(){write(1, "fd1\\n", 4);write(2, "fd2\\n", 4);write(3, "fd3\\n", 4);}' > a.c && gcc a.c
+
+echo a 3> 3.txt 2> 2.txt 1> 1.txt 2> 2.txt 3> 3.txt
+echo b 1>> 1.txt 2>> 2.txt 3>> 3.txt 2>> 2.txt 1>> 1.txt
+./a.out 1>> 1.txt 2>> 2.txt 3>> 3.txt 2>> 2.txt 1>> 1.txt
+cat 1.txt 2.txt 3.txt
+printf '#include<unistd.h>\nint main(){write(1, "fd1\\n", 4);write(2, "fd2\\n", 4);write(3, "fd3\\n", 4);}' > a.c && gcc a.c
+
+
+
 #----------------------------------------------
 # ; Semicolon separator
 
@@ -551,3 +594,24 @@ echo \{
 echo \}
 echo \~
 
+echo \$
+
+echo "\$"
+
+export HELLO=hello
+echo \$HELLO
+
+export HELLO=hello
+echo \\$HELLO
+
+export HELLO=hello
+echo "\$HELLO"
+
+export HELLO=hello
+echo "\\$HELLO"
+
+export HELLO=hello
+echo \\"$HELLO"
+
+export HELLO=hello
+echo "\"\"$HELLO"