shell script + one single syntax command in the script to send errors to log

Question

hi all

I have the test.ksh script

my question if it possible to define in the first of the script that all standard errors will go to /tmp/errlog file in place to put 2>/tmp/errlog after each command etc

second do not suggest the option to put the ./test.ksh 2>/tmp/errlog isn't relevant

lida

Answer 1

Try exec 2> /tmp/error.log.

From the manual:

exec [  -c  ] [  -a name   ] [  arg  . . .  ]

If arg  is given, the command specified by the arguments is executed in place of this shell without creating a new process. The -c option causes the environment to be cleared before applying variable assignments associated with the exec invocation. The -a option causes name  rather than the first arg, to become

argv[0] for the new process. Input/output arguments may appear and affect the current process. If arg  is not given, the effect of this command is to modify file descriptors as prescribed by the input/output redirection list. In this case, any file descriptor numbers greater than 2 that are opened with this mechanism are closed when invoking another program.