Sometimes your system may throw a bash error if there is a syntax error. There can be several reasons for this problem.
The reason each is a syntax error is because
[ is part of the shell syntax; actually order. This element was originally just a symbolic link to the main
test command. Of course, this is still the case, but it is also a built-in directive in bash and other Bourne-derived shells.
if is a wrapper keyword, but it covers
if. Because he didn’t see the exclusive
if, he doesn’t know what to do when he sees
then. (In fact, it gets exactly what it can: display a syntax error message.)
A little experiment shows that it’s not as easy as I thought. I tried to provide a command named
if[ and put that task in a directory in the private
$PATH. If I just type
if[ on the command line, the commit asks for more data. I’m not sure what you’re looking for, but it looks like invest handles the
mechanism in a special way. The shell simply doesn’t break
if[ into the
if keyword and only into the
[ command (as I’m sure you do)Reasonable expectation based on how different languages work). (If I really wanted to run this command, I could type
"if[" – or sometimes give it some reasonable structure.
In any case, this part probably doesn’t matter; Adding a space solves the problem.
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if [ words ];then # The code in the "expression" instance is true.If
if [ "$(ipcs|grep test|wc -l)" -eq 630 ]; it follows from that echo "Shared memory check succeeded"If
[[…]] to prevent word-separation of variable values in the absence of double quotes
if [[ $(ipcs|grep test|wc -l) -eq 630 ]]; then echo "view past shared memory"If
if [[ $(ipcs|grep -c test) -eq 630 ]]; then echo "Shared memory test passed"If
NAPRAW: Bash Przy Błędzie Składni
CORREÇÃO: Bash No Erro De Sintaxe
FIX: Bash 형식 오류
CORRECTIF : Bash Sur Une Erreur De Syntaxe
ÅTGÄRD: Bash On Format Error
FIX: Bash En Error De Sintaxis
FIX: Bash über Syntaxfehler
FIX: Bash Su Errore Di Sintassi
FIX: Bash Op Formaatfout
ИСПРАВЛЕНИЕ: Bash при ошибке формата