Carsey, The shell may not have a file system assigned, yes but when it find the stript(startup.nsh) file,it has the default file system-->the startup.nsh's file system, so the default cwd should exist,I think it is strange that start doing script without a default cwd,
currently, without a default cwd,some people have to write ugly script to make a default cwd like this: if exist fs0:\mytool.efi then fs0: goto work_label if exist fs1:\mytool.efi then fs1: goto work_label if exist fs2:\mytool.efi then fs2: goto work_label if exist fs3:\mytool.efi then fs3: goto work_label ... At 2018-09-20 22:21:58, "Carsey, Jaben" <[email protected]> wrote: >When the shell starts, it the prompt "shell>" or something like "fs0:>"... The >shell may not have a file system assigned yet so you cannot change directories >until you pick a file system. > >> -----Original Message----- >> From: edk2-devel [mailto:[email protected]] On Behalf Of >> krishnaLee >> Sent: Thursday, September 20, 2018 2:22 AM >> To: [email protected] >> Subject: [edk2] question about uefi shell-current working directory and >> shell- >> script >> Importance: High >> >> Hi, >> I wonder if it is a bug: >> I have a usb Fat32-disk,installed with EDK2 shell2.6 or 2.7, >> the root directory has a startup.nsh,the startup.nsh has only one line:"cd >> \", >> I boot my cannolake machine with this usb disk, >> in the uefi shell,I got a message:"cd: current directory not specified".it >> means >> the cwd environment variable was not set when start doing script. >> >> >> I think it may be an error,because the uefi shell can find the >> startup.nsh,why >> not set cwd(current working directory) before execute this script,so the cd >> command works fine. >> I mention it because I found if I put a uefi application(using >> efi_shell_protocol >> to access .\logfile.txt) in this startup.nsh,the uefi application can't >> access files, >> because I found the efi_shell_protocol need cwd to work too,such as >> efi_shell_protocol.OpenFileByName(). >> >> >> >> >> >> >> thank you, >> krishna >> >> >> >> _______________________________________________ >> edk2-devel mailing list >> [email protected] >> https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
