Command Reference Guide

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csh(1) csh(1)

coredumpsize Size of the largest core dump that is created

cputime Maximum number of CPU seconds to be used by each process

datasize Maximum growth of the data region allowed beyond the end of the

program text

descriptors Maximum number of open ﬁles for each process

filesize Largest single ﬁle that can be created

memoryuse Maximum size to which a process’s resident set size can grow

stacksize Maximum size of the automatically extended stack region

The maximum_use argument can be speciﬁed as a ﬂoating-point or integer number followed

by a scale factor: k or kilobytes (1024 bytes), m or megabytes, or b or blocks (the units used by

the ulimit system call). For both resource names and scale factors, unambiguous preﬁxes of

the names can be used. ﬁlesize can be lowered by an instance of csh, but can only be raised

by an instance whose effective user ID is root. For more information, refer to the documenta-

tion for the ulimit system call.

/usr/bin/login

. This is one

way to log off, included for compatibility with sh(1).

logout

Terminates a login shell. Especially useful if ignoreeof is set. A similar function,

bye, which

works for sessions that are not login shells, is provided for historical reasons. Its use is not

recommended because it is not part of the standard

BSD csh and may not be supported in

future releases.

newgrp

Changes the group identiﬁcation of the caller; for details see newgrp(1). A new shell is exe-

cuted by

newgrp so that the current shell environment is lost.

nice

nice +

number

nice command

nice +number command

The ﬁrst form sets the nice (run command priority) for this shell to 4 (the default). The

second form sets the priority to the given number. The ﬁnal two forms run command at

priority 4 and number respectively. The user with appropriate privileges can raise the prior-

ity by specifying negative niceness using

nice -number ... command is always executed in

a sub-shell, and restrictions placed on commands in simple

if statements apply. See also

nice(1).

nohup [command]

Without an argument, nohup can be used in shell scripts to cause hangups to be ignored for

the remainder of the script. With an argument, causes the speciﬁed command to be run with

hangups ignored. All processes executed in the background with & are effectively nohuped

as described under Jobs in the COMMANDS section.

notify [job ...]

Causes the shell to notify the user asynchronously when the status of the current (job not

speciﬁed) or speciﬁed jobs changes; normally notiﬁcation is presented before a prompt. This

is automatic if the shell variable notify is set.

onintr [-][label]

Controls the action of the shell on interrupts. With no arguments, onintr restores the default

action of the shell on interrupts, which action is to terminate shell scripts or return to the ter-

minal command input level. If - is speciﬁed, all interrupts are ignored. If a label is given,

the shell executes a goto label when an interrupt is received or a child process terminates

because it was interrupted.

If the shell is running in the background and interrupts are being ignored, onintr has no

effect; interrupts continue to be ignored by the shell and all invoked commands.

popd [+n]

Pops the directory stack, returning to the new top directory. With an argument, discards the

nth entry in the stack. The elements of the directory stack are numbered from 0 starting at

HP-UX Release 11i: December 2000 − 5 − Section 1−−133

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