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UNIX for Dummies Questions & Answers
can't execute a shell script
Post 302501990 by homeboy on Sunday 6th of March 2011 10:21:56 AM
03-06-2011
Quote:
You logged in as someone who had no home directory, and despite not being able to create a file, you copied a file called "script" into that directory?
So you copied a file, something you are unable to do, to somewhere that didn't exist?
What error did you get (aside from the invalid . in the while loop - that you wouldn't see, as you couldn't execute the script!)? Which OS are you using?
So you copied a file, something you are unable to do, to somewhere that didn't exist?
What error did you get (aside from the invalid . in the while loop - that you wouldn't see, as you couldn't execute the script!)? Which OS are you using?
what a fool i am.....Anyway,thanks for your help---------- Post updated at 10:21 AM ---------- Previous update was at 10:17 AM ----------
Quote:
A : would mean "true". I tested a . in bash (not in Ubuntu) and it throws an error.
If your user was missing a home directory, you probably just forgot to specify it when running useradd.
You obviously resolved that using mkdir, chown and chmod.
I'm confused (it doesn't always take much to confuse me!), but where exactly is your problem, and what has nohup to do with it? (except that if you had run it nohup, the output would go to nohup.out by default)
You said you couldn't execute the script, but clearly you can if it's an infinite loop.
Try changing the . to a :. Otherwise perhaps you have an alias for date that's expecting some input (that would make the script seem "infinite")?
If your user was missing a home directory, you probably just forgot to specify it when running useradd.
You obviously resolved that using mkdir, chown and chmod.
I'm confused (it doesn't always take much to confuse me!), but where exactly is your problem, and what has nohup to do with it? (except that if you had run it nohup, the output would go to nohup.out by default)
You said you couldn't execute the script, but clearly you can if it's an infinite loop.
Try changing the . to a :. Otherwise perhaps you have an alias for date that's expecting some input (that would make the script seem "infinite")?
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LEARN ABOUT OSX
nohup
NOHUP(1) BSD General Commands Manual NOHUP(1) NAME
nohup -- invoke a utility immune to hangups SYNOPSIS
nohup [--] utility [arguments] DESCRIPTION
The nohup utility invokes utility with its arguments and at this time sets the signal SIGHUP to be ignored. If the standard output is a ter- minal, the standard output is appended to the file nohup.out in the current directory. If standard error is a terminal, it is directed to the same place as the standard output. Some shells may provide a builtin nohup command which is similar or identical to this utility. Consult the builtin(1) manual page. ENVIRONMENT
The following variables are utilized by nohup: HOME If the output file nohup.out cannot be created in the current directory, the nohup utility uses the directory named by HOME to create the file. PATH Used to locate the requested utility if the name contains no '/' characters. EXIT STATUS
The nohup utility exits with one of the following values: 126 The utility was found, but could not be invoked. 127 The utility could not be found or an error occurred in nohup. Otherwise, the exit status of nohup will be that of utility. SEE ALSO
builtin(1), csh(1), signal(3) STANDARDS
The nohup utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. BUGS
Two or more instances of nohup can append to the same file, which makes for a confusing output. BSD
July 19, 2001 BSD