Errors found

[iaurg]

export without params cd >

---

Error:

~echo hello>world~

Solved OK
[ minishell ]$ echo "hello colado">xx.txt
[1]    53438 segmentation fault (core dumped)  ./minishell

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does nothing, in bash this fill the file

ps aux | > result.txt

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echo $TERM print the first element found with "TERM" on name, instead of printing out TERM variable the shell founds TERM_PROGRAM and print it.

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cat pipe-test.txt | sort | uniq > ordered.txt

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cat minishell | wc -l

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Our shell parse ">" as a redirection instead of a string

echo hello ">" file

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Some inconsistency on echo:

bash:

export TEST=LOL
echo $TEST$TEST$TEST=lol$TEST

returns

LOLLOLLOL=lolLOL

In our minishell returns empty

[iaurg]

redirection:

---

Our shell:

cat <<
$cat: '<<': No such file or directory

Bash:

cat <<
$ bash: syntax error near unexpected token `newline'

---

Our shell:

cat < <
$ minishell: no such file or directory: <
$ cat: '<': No such file or directory

Bash:

cat < <
$ bash: syntax error near unexpected token `<'

---

Trying to write into a missing file

[ minishell ]$ heredoc.txt << END
… test here doc
… END

minishell: heredoc.txt: No such file or directory
==28441== Syscall param execve(filename) points to unaddressable byte(s)
==28441==    at 0x499E17B: execve (syscall-template.S:78)
==28441==    by 0x4017A2: execute_child_command (execute_system.c:84)
==28441==    by 0x401874: system_exec (execute_system.c:99)
==28441==    by 0x4014CF: execute (execute.c:56)
==28441==    by 0x4021C5: handle_execute (pipe.c:79)
==28441==    by 0x401F16: minishell (minishell.c:68)
==28441==    by 0x403143: main (main.c:22)
==28441==  Address 0x0 is not stack'd, malloc'd or (recently) free'd

---

cat << EOF > print.sh
… echo $PWD
… EOF
==29304== Invalid read of size 1
==29304==    at 0x4016A5: command_comes_first (execute_system.c:40)
==29304==    by 0x40170A: handle_first_arg (execute_system.c:59)
==29304==    by 0x40177C: execute_child_command (execute_system.c:81)
==29304==    by 0x401874: system_exec (execute_system.c:99)
==29304==    by 0x4014CF: execute (execute.c:56)
==29304==    by 0x4021C5: handle_execute (pipe.c:79)
==29304==    by 0x401F16: minishell (minishell.c:68)
==29304==    by 0x403143: main (main.c:22)
==29304==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==29304== 
==29304== 
==29304== Process terminating with default action of signal 11 (SIGSEGV)
==29304==  Access not within mapped region at address 0x0
==29304==    at 0x4016A5: command_comes_first (execute_system.c:40)
==29304==    by 0x40170A: handle_first_arg (execute_system.c:59)
==29304==    by 0x40177C: execute_child_command (execute_system.c:81)
==29304==    by 0x401874: system_exec (execute_system.c:99)
==29304==    by 0x4014CF: execute (execute.c:56)
==29304==    by 0x4021C5: handle_execute (pipe.c:79)
==29304==    by 0x401F16: minishell (minishell.c:68)
==29304==    by 0x403143: main (main.c:22)
==29304==  If you believe this happened as a result of a stack
==29304==  overflow in your program's main thread (unlikely but
==29304==  possible), you can try to increase the size of the
==29304==  main thread stack using the --main-stacksize= flag.
==29304==  The main thread stack size used in this run was 8388608.
==29304== 
==29304== HEAP SUMMARY:
==29304==     in use at exit: 211,024 bytes in 504 blocks
==29304==   total heap usage: 1,435 allocs, 936 frees, 277,540 bytes allocated
==29304== 
==29304== LEAK SUMMARY:
==29304==    definitely lost: 32 bytes in 1 blocks
==29304==    indirectly lost: 34 bytes in 2 blocks

---

cat << EOF
… The current working directory is: $PWD
… EOF
==29885== Invalid read of size 8
==29885==    at 0x401CF7: sanitize_argv (here_doc.c:80)
==29885==    by 0x401DE7: read_input (here_doc.c:117)
==29885==    by 0x401F0A: minishell (minishell.c:66)
==29885==    by 0x403143: main (main.c:22)
==29885==  Address 0x4b2aeb0 is 0 bytes after a block of size 32 alloc'd
==29885==    at 0x483B7F3: malloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==29885==    by 0x403FF0: ft_calloc (in /home/italo/Documents/Studies/42/42-minishell/minishell)
==29885==    by 0x402C28: handle_tokens (tokens.c:96)
==29885==    by 0x401DBB: read_input (here_doc.c:103)
==29885==    by 0x401F0A: minishell (minishell.c:66)
==29885==    by 0x403143: main (main.c:22)
==29885== 
The current working directory is: $PWD

---

Errors with examples: https://linuxize.com/post/bash-heredoc/

cat << EOF > file.txt

[iaurg]

Different return:

Our shell:

echo "hi" >> >> test.txt

Print "hi >>" inside text.txt file

Bash:

echo "hi" >> >> test.txt
$bash: syntax error near unexpected token `>>'

[iaurg]

Different return:

Our shell:

echo | |
$

Bash:

echo | |
$bash: syntax error near unexpected token `|'

---

Our shell:

<
$minishell: no such file or directory: (null)

Bash:

<
bash: syntax error near unexpected token `newline'

---

Our shell:

cat <|
$ cat: '<|': No such file or directory

Bash:

cat <|
$ bash: syntax error near unexpected token `|'

---

Our shell:

a
$minishell: a: No such file or directory

Bash:

a
$a: command not found

---

[iaurg]

cat | cat | ls

Show ls after CTRL + C

[iaurg]

Validar na workspace

[iaurg]

Comandos que precisam executar e funcionar em "combo"

~export TEST1=1 TEST2=2 TEST3=3~

~unset TEST1=1 TEST2=2 TEST3=3~