Shell-z-D and so on

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[ -a FILE ] IfFILE If yes, it is true.[ -b FILE ] IfFILE If the object exists and is a special file, it is true.[ -c FILE ] IfFILE If a special file exists and is a word, it is true.[ -d FILE ] IfFILE A directory exists and is true.[ -e FILE ] IfFILE If yes, it is true.[ -f FILE ] IfFILE If a common file exists, it is true.[ -g FILE ] IfFILE If the sgid already exists and has been set, it is true.[ -h FILE ] IfFILE If a symbolic connection exists, it is true.[ -k FILE ] IfFILE If it already exists and has been set to stick bits, it is true.[ -p FILE ] IfFILE An existing name pipeline (f If O) is true.[ -r FILE ] IfFILE If it is readable, it is true.[ -s FILE ] IfFILE Exist and not small0True.[-T fd] It is true if the file descriptor FD is opened and points to a terminal.[ -u FILE ] IfFILE SUID (set User ID) is true.[ -w FILE ] IfFILE IfFILE If it exists and is writable, it is true.[ -x FILE ] IfFILE If it exists and is executable, it is true.[ -O FILE ] IfFILE Valid user ID.[ -G FILE ] IfFILE A valid user group exists.[ -L FILE ] IfFILE If a symbolic connection exists, it is true.[ -N FILE ] IfFILE Existand has been modIf IED since it was last read is true.[ -S FILE ] IfFILE A socket exists and is true.[File1-nt file2] If file1 has been changed more recently than file2,or If file1 existsand FILE2 does notTrue.[File1-ot file2] True if file1 is older than file2, or if file2 exists and file1 does not exist.[File1-Ef file2] True if file1 and file2 point to the same device and node number.[-O optionname] true if the shell option "optionname" is enabled.[ -z STRING ]  “STRING"Is true if the length is zero.[ -n STRING ] or [ STRING ]  “STRINGThe non-zero is true.[String1 = string2] If2Strings are the same. "=" May be used insteadof “==” for Strict POSIX compliance is true.[String1! = String2] true if the strings are not equal.[String1 <string2] If "string1" sorts before "string2" lexicographicallyin The current locale is true.[String1> string2] If "string1" sorts after "string2" lexicographicallyin The current locale is true.[ ARG1 OP ARG2 ] “OP” is one of -eq, -ne, -lt, -le, -gt or -ge. These arithmetic binary

Shell-z-D and so on