08-22-2001
It should be created automatically by the shell... I may be wrong, though. Also, I think some shells have the ability to turn the shell history recording off - I'm almost sure that at least in some C shells, it can be set by a simple parameter.
If you want to see what they're REALLY doing (.sh_history files can be edited), look into process accounting. It isn't used as often now as it used to, because it can impact the speed of systems with many users / processes, but if it's built into your kernel, you can turn it on or off.
See if the acct command, or something similar exists on your system. If all else fails, try man -k accounting to find it by another name.
HTH
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ACCT(2) System Calls Manual ACCT(2)
NAME
acct - turn accounting on or off
SYNOPSIS
acct(file)
char *file;
DESCRIPTION
The system is prepared to write a record in an accounting file for each process as it terminates. This call, with a null-terminated string
naming an existing file as argument, turns on accounting; records for each terminating process are appended to file. An argument of 0
causes accounting to be turned off.
The accounting file format is given in acct(5).
This call is permitted only to the super-user.
NOTES
Accounting is automatically disabled when the file system the accounting file resides on runs out of space; it is enabled when space once
again becomes available.
RETURN VALUE
On error -1 is returned. The file must exist and the call may be exercised only by the super-user. It is erroneous to try to turn on
accounting when it is already on.
ERRORS
Acct will fail if one of the following is true:
[EPERM] The caller is not the super-user.
[ENOTDIR] A component of the path prefix is not a directory.
[EINVAL] The pathname contains a character with the high-order bit set.
[ENAMETOOLONG] A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 characters.
[ENOENT] The named file does not exist.
[EACCES] Search permission is denied for a component of the path prefix, or the path name is not a regular file.
[ELOOP] Too many symbolic links were encountered in translating the pathname.
[EROFS] The named file resides on a read-only file system.
[EFAULT] File points outside the process's allocated address space.
[EIO] An I/O error occurred while reading from or writing to the file system.
SEE ALSO
acct(5), sa(8)
BUGS
No accounting is produced for programs running when a crash occurs. In particular non-terminating programs are never accounted for.
4th Berkeley Distribution May 22, 1986 ACCT(2)