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Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):
Subscribe to the feed for:
Group membership in OS X is a mish-mash of standards that end up meaning there's almost a half-dozen of ways to belong to a group, what with group inheritance and automatic assignment. This means there's no easy command to find out all groups a user belongs to. The only sensible way then is to list all users and then query each user for membership.
NOTE: This is a function. Once input you can execute it by calling with a groupname.
This will play the audio goodness posted up on PlayTweets via twitter right form the ever loving cmdline. You do not even need a twitter account. I hashed this out in a bit of a hurray as the kids need to get to sleep....I will be adding a loop based feature that will play new items as they come in...after what your are listening to is over.
http://twitter.com/playTweets for more info on playtweets
'ac' is included in the package 'acct', which is described as "The GNU Accounting utilities for process and login accounting". Other interesting flags are:
* print statistics for a specified user
ac -d username
* print statistics for all the users
With my command, the output is also printed in a sexagesimal, more readable, style.
Returns the number of running httpd processes
this version is going to work on redhat/centos/suse AND ubuntu/debian systems
Also shows files as they are found. Only works from a tty.
Do this with caution.
check apache2 status with a lot of details
A simple way to find all machines on a network subnet is pinging a broadcast address (-b flag). First run ifconfig ifconfig. Then use "Bcast" address and '-b' flag in ping
Sometimes you just want to operate on files that were created after specific date. This command consists of 3 commands:
- Create a dummy file with the custom date
- Find all files with "creation time" further than our custom date by using `-newer` find option. Add your crazy stuff here, like moving, deleting, printing, etc.
- Remove the dummy file
Citrix XenServer 5.6, can be piped to grep for more interesting output
Simple use of find and grep to recursively search a directory for files that contain a certain term.
Use this command if you want to control the size of the files in human readable, every one second.