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Full Discussion: Mkbootfs writing to stdout in bash script
Top Forums Shell Programming and Scripting Mkbootfs writing to stdout in bash script Post 302795215 by Corona688 on Wednesday 17th of April 2013 12:06:28 PM
Old 04-17-2013
Quote:
Originally Posted by Phil3759
If you read well my first post you'll see that I did:
1- run this from command line in terminal: works perfect
Code:
mkbootfs /path/to/root > /path/to/ramdisk-recovery.cpio

2- put same line in shell script: it fails writing to stdout instead of the file
Well, stdout is the file, by definition, so it can't be writing to stdout... Try running nohup mkbootfs ... and seeing if the output ends up in nohup.out.

Without knowing the code of mkbootfs it's hard to say for sure -- it's not a standard command, I can't test it myself here. But it's possible for a program to tell if it has a terminal or not and act different accordingly.
This User Gave Thanks to Corona688 For This Post:
Phil3759
 

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LEARN ABOUT PHP

nohup

NOHUP(1)                                                           User Commands                                                          NOHUP(1)

NAME

       nohup - run a command immune to hangups, with output to a non-tty

SYNOPSIS

       nohup COMMAND [ARG]...
       nohup OPTION

DESCRIPTION

       Run COMMAND, ignoring hangup signals.

       --help display this help and exit

       --version
              output version information and exit

       If  standard  input  is a terminal, redirect it from an unreadable file.  If standard output is a terminal, append output to 'nohup.out' if
       possible, '$HOME/nohup.out' otherwise.  If standard error is a terminal, redirect it to standard output.   To  save  output  to  FILE,  use
       'nohup COMMAND > FILE'.

       NOTE: your shell may have its own version of nohup, which usually supersedes the version described here.  Please refer to your shell's doc-
       umentation for details about the options it supports.

AUTHOR

       Written by Jim Meyering.

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report nohup translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2017 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       Full documentation at: <http://www.gnu.org/software/coreutils/nohup>
       or available locally via: info '(coreutils) nohup invocation'

GNU coreutils 8.28                                                 January 2018                                                           NOHUP(1)
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