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Full Discussion: Scripts without shebang
Top Forums Shell Programming and Scripting Scripts without shebang Post 302694905 by 244an on Friday 31st of August 2012 03:22:24 PM
Old 08-31-2012
Quote:
Originally Posted by alister
...You did not clearly and unambiguously state the exact commands that you used to create your script and run it. Please do so.
...
Here is a screen dump when testing different cases - version info as first command (only some info hidden and added comments as "# ..."):
Code:
# new fresh login...
[user@server ~]$ uname -a
FreeBSD xxx.yyy.zz 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Fri Jan 12 11:05:30 UTC 2007     ...
[user@server ~]$ cd test/
[user@server ~/test]$ cat tfs
[[ 1 == 1 ]] && echo yes || echo no
[user@server ~/scripts]$ ls -l tfs
-rwxr--r--  1 user  user  36 Aug 31 20:34 tfs

# run the script (the folder is not in PATH):
[user@server ~/test]$ ./tfs
yes
# testing forcing sh:
[user@server ~/test]$ sh tfs
[[: not found
no
# testing forcing bash:
[user@server ~/test]$ bash tfs
yes

# enter sh:
[user@server ~/test]$ sh
[2 user@server /usr/home/user/test]$ ./tfs
[[: not found
no
# enter bash:
[2 user@server /usr/home/user/test]$ bash
[3 user@server ~/test]$ ./tfs
yes

[3 user@server ~/test]$ exit
exit
[2 user@server /usr/home/user/test]$ exit
[user@server ~/test]$ env
# some taken away...
DL_IMP=../data/import/contacts/
SHELL=/usr/local/bin/bash
TERM=xterm
SSH_TTY=/dev/ttyp1
USER=user
ENV=/home/user/.shrc
PAGER=more
FTP_PASSIVE_MODE=YES
EDITOR=vi
HOME=/home/user
LOGNAME=user
_=/usr/bin/env
...
[user@server ~/test]$

Quote:
Originally Posted by alister
...If the system call fails with ENOEXEC, that means that an executable file was found but its format is not recognized. This happens if the file is a foreign binary or if it's a shell script without a shebang. execvpe(3) then reattempts to execve a bourne shell with the unrecognized file as its first argument.
Can it be that it's only when the file is a foreign binary that it falls back to _PATH_BSHELL?
Last edited by 244an; 08-31-2012 at 04:49 PM..
 

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LEARN ABOUT SUSE

drop_user_mapping

DROP USER 
MAPPING(7)						   SQL Commands 					      DROP USER MAPPING(7)

NAME

       DROP USER MAPPING - remove a user mapping for a foreign server

SYNOPSIS

       DROP USER MAPPING [ IF EXISTS ] FOR { username | USER | CURRENT_USER | PUBLIC } SERVER servername

DESCRIPTION

       DROP USER MAPPING removes an existing user mapping from foreign server.

       The  owner  of  a foreign server can drop user mappings for that server for any user. Also, a user can drop a user mapping for his own user
       name if USAGE privilege on the server has been granted to the user.

PARAMETERS

       IF EXISTS
	      Do not throw an error if the user mapping does not exist. A notice is issued in this case.

       username
	      User name of the mapping. CURRENT_USER and USER match the name of the current user. PUBLIC is used to match all present  and  future
	      user names in the system.

       servername
	      Server name of the user mapping.

EXAMPLES

       Drop a user mapping bob, server foo if it exists:

       DROP USER MAPPING IF EXISTS FOR bob SERVER foo;

COMPATIBILITY

       DROP USER MAPPING conforms to ISO/IEC 9075-9 (SQL/MED). The IF EXISTS clause is a PostgreSQL extension.

SEE ALSO

       CREATE USER MAPPING [create_user_mapping(7)], ALTER USER MAPPING [alter_user_mapping(7)]

SQL - Language Statements					    2010-05-14						      DROP USER MAPPING(7)
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