Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

ops5.16(3pm) [osx man page]

ops(3pm)						 Perl Programmers Reference Guide						  ops(3pm)

ops - Perl pragma to restrict unsafe operations when compiling SYNOPSIS
perl -Mops=:default ... # only allow reasonably safe operations perl -M-ops=system ... # disable the 'system' opcode DESCRIPTION
Since the "ops" pragma currently has an irreversible global effect, it is only of significant practical use with the "-M" option on the command line. See the Opcode module for information about opcodes, optags, opmasks and important information about safety. SEE ALSO
Opcode, Safe, perlrun perl v5.16.2 2012-08-26 ops(3pm)

Check Out this Related Man Page

QUOTAON(8)						    BSD System Manager's Manual 						QUOTAON(8)

quotaon, quotaoff -- turn filesystem quotas on and off SYNOPSIS
quotaon [-g] [-u] [-v] filesystem ... quotaon [-g] [-u] [-v] -a quotaoff [-g] [-u] [-v] filesystem ... quotaoff [-g] [-u] [-v] -a DESCRIPTION
Quotaon announces to the system that disk quotas should be enabled on one or more filesystems. Quotaoff announces to the system that the specified filesystems should have disk quotas turned off. The filesystem must be mounted and it must have the appropriate mount option file located at its root, the .quota.ops.user file for user quota configuration, and the file for group quota configuration. Quotaon also expects each filesystem to have the appropriate quota data files located at its root, the .quota.user file for user data, and the file for group data. These filenames and their root location cannot be overridden. By default, quotaon will attempt to enable both user and group quotas. By default, quotaoff will disable both user and group quotas. Available options: -a If the -a flag is supplied in place of any filesystem names, quotaon/quotaoff will enable/disable any filesystems with an existing mount option file at its root. The mount option file specifies the types of quotas that are to be configured. -g Only group quotas will be enabled/disabled. The mount option file,, must exist at the root of the filesystem. -u Only user quotas will be enabled/disabled. The mount option file, .quota.ops.user, must exist at the root of the filesystem. -v Causes quotaon and quotaoff to print a message for each filesystem where quotas are turned on or off. Specifying both -g and -u is equivalent to the default. Quotas for both users and groups will automatically be turned on at filesystem mount if the appropriate mount option file and binary data file is in place at its root. FILES
Each of the following quota files is located at the root of the mounted filesystem. The mount option files are empty files whose existence indicates that quotas are to be enabled for that filesystem. .quota.user data file containing user quotas data file containing group quotas .quota.ops.user mount option file used to enable user quotas mount option file used to enable group quotas SEE ALSO
quota(1), quotactl(2), edquota(8), quotacheck(8), repquota(8) HISTORY
The quotaon command appeared in 4.2BSD. 4.2 Berkeley Distribution October 17, 2002 4.2 Berkeley Distribution
Man Page

13 More Discussions You Might Find Interesting

1. AIX

AIX Links

Manufacturer Links General Information Home Page: IBM United States Documentation/Information: IBM System p - UNIX servers: Support and services pSeries and AIX Information Center Developerworks AIX Wiki: AIX Wiki AIX for System Administrators In-depth information from IBM: IBM... (0 Replies)
Discussion started by: Perderabo
0 Replies

2. OS X (Apple)

Mac OS X: Based on UNIX - Solid As a Rock

See this threads: Page Not Found - Apple Open Source - Apple (0 Replies)
Discussion started by: Neo
0 Replies

3. Shell Programming and Scripting

At A Glance Coloured Real Time Bargraph Generator...

Not sure if anyone is interested but I am just getting into UNIX like shell scripting... I have great interest in pseudo-animations in text mode and accessing HW like /dev/dsp for example... ... Have fun, I do... ;o) # !/bin/sh # # # # A DEMO 6 bit coloured... (0 Replies)
Discussion started by: wisecracker
0 Replies

4. UNIX for Advanced & Expert Users

When is a _function_ not a _function_?

For a starter I know the braces are NOT in the code... Consider these code snippets:- #!/bin/bash --posix x=0 somefunction() if then echo "I am here." fi # somefunction #!/bin/bash --posix x=0 somefunction() if (2 Replies)
Discussion started by: wisecracker
2 Replies

5. OS X (Apple)

Installing Dash Shell on OS X Lion

For those interested in installing dash shell on OSX Lion to help test POSIX compliancy of shell scripts, it is quite easy. I did it like this: If you don't have gcc on your system: 0. Download and install the Command Line Tools for Xcode package from Sign In - Apple * 1. Download the dash... (2 Replies)
Discussion started by: Scrutinizer
2 Replies

6. OS X (Apple)

Hearing Aid for OSX 10.12.x and greater.

Hearing Aid... Hi folks yet another bizarre piece of code that is Apple OSX 10.12.x to at least 10.14.1 specific. It requires only a default OSX install, and the internal microphone along with an external headphone assembly. Pre-amble, 14-02-2019: For over 3 weeks now I have been suffering a... (3 Replies)
Discussion started by: wisecracker
3 Replies

7. UNIX for Advanced & Expert Users

Shopt -s histappend

What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file. # When the shell exits, append to the history file instead of overwriting it shopt -s histappend (3 Replies)
Discussion started by: cokedude
3 Replies

8. OS X (Apple)

Undeletable file

Greetings, I'm trying to delete a file with a weird name from within Terminal on a Mac. It's a very old file (1992) with null characters in the name: ␀␀Word Finder® Plus™. Here are some examples of what I've tried: 12FX009:5 dpontius$ ls ␀␀Word Finder® Plus™ 12FX009:5 dpontius$ rm... (29 Replies)
Discussion started by: dpontius
29 Replies

9. Shell Programming and Scripting

To print diamond asterisk pattern based on inputs

I have to print the number of stars that increases on each line from the minimum number until it reaches the maximum number, and then decreases until it goes back to the minimum number. After printing out the lines of stars, it should also print the total number of stars printed. I have tried... (13 Replies)
Discussion started by: rohit_shinez
13 Replies

10. Programming

My first PERL incarnation... Audio Oscillograph

Hi all... Well guys and gals, I jumped in at the deep end and found things that PERL cannot do by default. Many tricky terminal escape codes are not catered for so I had to create workarounds. One thing I searched for was this: Passing perl variable to shell command AND, @Neo this was... (15 Replies)
Discussion started by: wisecracker
15 Replies

11. Shell Programming and Scripting

A dash to GOTO or a dash from GOTO, that is the question...

Well, guys I saw a question about GOTO for Python. So this gave me the inspiration to attempt a GOTO function for 'dash', (bash and ksh too). Machine: MBP OSX 10.14.3, default bash terminal, calling '#!/usr/local/bin/dash'... This is purely a fun project to see if it is possible in PURE... (3 Replies)
Discussion started by: wisecracker
3 Replies

12. Shell Programming and Scripting

Syntax error in subtraction in Bash

I am sharing a code snippet. for (( i=0; i<=$(( $count -1 )); i++ )) do first=${barr2} search=${barr1} echo $first echo "loop begins" for (( j=0; j<=5000; j++ )) do if } == $search ]]; then echo $j break; fi done second=${harr2} echo $second (2 Replies)
Discussion started by: ngabrani
2 Replies

13. Shell Programming and Scripting

Python: Refer a properties file from different location

Hi All, I'm having a python script: in /path/to/script/ I'm using a properties file: (it is having values as dictionary{}) which is in same DIR as the script. Sample Properties file: params = { 'target_db' : 'a1_db' 'src_db' : ... (15 Replies)
Discussion started by: saps19
15 Replies