UNIX for OpenVMS Users, Third Edition

Appendix A: Command Summaries

Table A.1: OpenVMS Commands with UNIX Equivalents

OpenVMS DCL Command

UNIX Equivalent

Section

UNIX Function

:= =

alias

3.2.2

Define an alias for a command

:=

set [ ]

3.2.2

Set shell variable

=

= [ ]

10.7, 3.2.3

Set shell variable

:==

==

setenv [ ]

export [ ]

3.2.1

Define an environment variable (meanings differ between shells)

@

source file

. file

10.9.4, 3.2.2

Have parent process invoke a script

ANALYZE /CRASH_DUMP /COPY

savecore

Copy crash dump out of a dump file

ANALYZE /DISK_STRUCTURE

bcheckrc, fsck

Consistency check file system

ANALYZE /IMAGE

odump -Dlh file

List the virtual address sections, file offsets, and references to shared libraries in an executable file

APPEND

cat

4.8

Concatenate files

ASSIGN

ln -s

8.4.10

Create a pointer to a file

ATTACH

fg

7.3.3

Bring a job to the foreground

ATTACH

bg

7.3.3

Move a process to the background

BACKUP

dump, vdump

11.5.1

Back up files

BACKUP

tar

7.2.1

Back up files to a tar file

BACKUP

tar -x

Restore files from a tar file

BACKUP /INITIALIZE

tar -c

Create new a save-set at beginning of tape

BACKUP /LIST

tar -t

List contents

BACKUP /LOG

tar -v

Report progress

BACKUP /NOREWIND

tar -r

Write at end of existing tar files

tar -u

Write only files not already on tape

tar -f

Use alternative file or device

BACKUP /RECORD

tar -m

Update file's modification date upon restore

BACKUP

restore, vrestore

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