12-04-2004
If you write a script, you can send input into it like this:
./somescript < inputfile
The script can accomplish the same thing internally by using:
exec < inputfile
After that line, the script's input is inputfile. It can do the same to output:
exec > somescript.log 2>&1
This send stderr and stdout combined into the file. There is more to it, but this is the basics.
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MKERRLST(1) General Commands Manual MKERRLST(1)
NAME
mkerrlst - create system error file
SYNOPSIS
mkerrlst [ -i inputfile ] [ -o outputfile ]
DESCRIPTION
Mkerrlst(1) creates error message files in the format described by syserrlst(5).
With no arguments mkerrlst creates the file /etc/syserrlst from the internal array sys_errlist.
Give just the -o option mkerrlst will create the file outputfile from the internal array sys_errlist.
Given just the -i option mkerrlst will create the file /etc/syserrlst from the input file inputfile.
Given both -i and -o options mkerrlst will create the error message file outputfile from the strings contained in inputfile.
NOTE: error messages are numbered from 0. If the error 0 does not have a message associated with it the first string in inputfile must
still be present.
RETURN VALUE
mkerrlst exits with status of 0 if no errors are encountered. If errors do occur an error message is printed on stderr and the exit status
is 1.
ERRORS
mkerrlst(1) can encounter any of the errors for the open(2), lseek(2), read(2), or write(2) system calls.
SEE ALSO
syserrlst(3) syserrlst(5)
HISTORY
mkerrlst(1), first appeared in 2.11BSD.
BUGS
Error messages can be a maximum of 80 characters.
3rd Berkeley Distribution March 14, 1996 MKERRLST(1)