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Mkbootfs writing to stdout in bash script

 
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Old 04-16-2013
Mkbootfs writing to stdout in bash script
Hi,

I need to automate some repacking tasks of a boot image for Android
When in command line, I can use this command:

Code:
mkbootfs /path/to/root > /path/to/ramdisk-recovery.cpio;

However, if I try to run the command from a shell script under Ubuntu, it fails and outputs to stdout instead of the specified ramdisk-recovery.cpio file.

I tried to pipe it using :
Code:
mkbootfs /path/to/root | cpio > /path/to/ramdisk-recovery.cpio;
# or
mkbootfs /path/to/root | cpio -o > /path/to/ramdisk-recovery.cpio;

but it fails also when in a bash script

I tried to redirect stdout using &> in different combinations, but I am still filling my screen while the ramdisk-recovery.cpio is not written

Anone knows how to correctly redirect the output for such programs? I found no manual/help for the mkbootfs binary
 
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LEARN ABOUT DEBIAN

rbash

RBASH(1)						      General Commands Manual							  RBASH(1)

NAME

       rbash - restricted bash, see bash(1)

RESTRICTED SHELL

       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted.  A restricted shell is
       used to set up an environment more controlled than the standard shell.  It behaves identically to bash with the exception that the  follow-
       ing are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV

       o      specifying command names containing /

       o      specifying a file name containing a / as an argument to the .  builtin command

       o      specifying a filename containing a slash as an argument to the -p option to the hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the -f and -d options to the enable builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      turning off restricted mode with set +r or set +o restricted.

       These restrictions are enforced after any startup files are read.

       When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.

SEE ALSO

       bash(1)

GNU Bash-4.0							    2004 Apr 20 							  RBASH(1)