command line

I have lines like these, and I want to know how many lines I actually have... 09:16:39 AM all 2.00 0.00 4.00 0.00 0.00 0.00 0.00 0.00 94.00 09:16:40 AM all 5.00 0.00 0.00 4.00 0.00 0.00 0.00... more

I always work on a non-administrator account on my Windows computer. Sometimes I need to install programs which requires administrator access. As I mostly use the Windows command prompt, is there a... more

In Windows 7, when I start the Command prompt, is there any command to display the contents of an environment variable (such as the `JAVA_HOME` or `PATH` variables)?I have tried with `echo $PATH`,... more

I have a ~23000 line SQL dump containing several databases worth of data. I need to extract a certain section of this file (i.e. the data for a single database) and place it in a new file. I know... more

I'd like to reverse the order of lines in a text file (or stdin), preserving the contents of each line. So, i.e., starting with: foo bar baz I'd like to end up with baz bar foo Is there... more

Is there any linux command that I can call from a Bash script that will print the directory structure in the form of a tree, e.g., folder1 a.txt b.txt folder2 folder3

For example: man(1), find(3), updatedb(2)? What do the numbers in parentheses (Brit. "brackets") mean?

I am trying to print a text in the terminal using echo command. I want to print the text in a red color. How can I do that?

I have to check the time in linux terminal.<br/> What is the command for getting date and time in Linux terminal ?<br/> Is there any way in which we can set custom function ?

The SAS display manager is a comamnd line interface to the SAS system, which remains in Base SAS as a legacy facility. However the online documentation on how to use this facility is sparse at... more

In Unix/Linux, how do you find out what group a given user is in via command line?

I am working on writing some scripts to `grep` certain directories, but these directories contain all sorts of file types. I want to `grep` just `.h` and `.cpp` for now, but maybe a few others in... more