Here, by default both apt-cache and aptitude search for a package on whole list of packages in repository, but output of aptitude shows whether the package is installed on the system or not by giving a per-package flag which here is 'p' indicating that package is present but not installed and 'i' which indicates that the package is installed, whereas apt-cache just lists the package and its one-line detail without telling if package is installed or not.
deviation deÂ·viÂ·aÂ·tion (dÄ'vÄ-Ä'shÉn) n. A turning away or aside from a normal course. An abnormality. Deviant behavior or attitudes. The difference, especially the absolute difference, between one number in a set and the mean of the set.
DEFINITION of 'Moving Average Convergence Divergence-MACD'. A trend-following momentum indicator that shows the relationship between two moving averages of prices. The MACD is calculated by subtracting the 26-day exponential moving average (EMA) from the 12-day EMA.A nine-day EMA of the MACD, called the signal line, is then plotted on top of the MACD, functioning as a trigger for buy and sell signals.REAKING DOWN 'Moving Average Convergence Divergence-MACD'. There are three common methods used to interpret the MACD: 1. Crossovers-As shown in the chart above, when the MACD falls below the signal line, it is a bearish signal, which indicates that it may be time to sell.