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What are hidden files and how can they is displayed in UNIX?
A hidden file is any file or directory that starts with the character '.' (period). It is designed to eliminate common files from showing with the 'ls' command. Using the -a option for 'ls' will show all files.
What do hash builtin do?
Each Name the full file name of the command is determined by searching the directories in $PATH and remembered.
What does the hash builtin do?
Each Name the full file name of the command is determined by searching the directories in $PATH and remembered.
What is the purpose of the question mark in a file name in a command line?
it is a wildcard for each unknown letter in a command. If you want to find all files in a directory that start with a and have a three letter file extention, you would use the command dir a*.???
When a script file contains more than one command what each command must end with?
In general each command in a script file is on a separate line, so it is terminated with a line terminator character (put it automatically when you press the Enter key). Unlike some programming languages, a script file does not need a special terminator for the end of the line.
How do you make a new command in Unix?
first, make a file. in the file you type in the command's name. an example would be the command date. name the file what you want to call that command. when you use the command, type in cat filename and the computer will do the command.
What are wild cards and explain their usage in pattern matching in unix?
wild cards are a special set of character used by the shell to match file name .A wild card "Stand in" for other character of the file name .The file name pattern is formed by ordinary character and meta character using well defined rules . When the pattern is used as an arguments with a command , the shell first suitably expand the arguments and then executes the command . The use of wild card make easier to deal with file in UNIX * any number of character - including zero character ? single character [abc] single character - either a,b,c [a-d] any single character in the range of a to d [!abc] a single character that is not a, b, and c [!a-d] any character not in the range of a to d
What is a file command used to create or start a new file?
The 'touch' command creates a new empty file in Unix.
How can I use ffmpeg to convert a WMV file to an MP4 file?
You can use ffmpeg to convert a WMV file to an MP4 file by running a command in the terminal or command prompt. The command typically looks like this: ffmpeg -i inputfile.wmv outputfile.mp4 This command will convert the WMV file named "inputfile.wmv" to an MP4 file named "outputfile.mp4".
What does the command prompt DEL do?
the DEL command deletes a specified file when typed in the form below: del file for more information about the command, type : del /? in command prompt
What is the difference between the cat and more commands in Unix?
Both the 'more' and the 'cat' commands will list the contents of one or more files. In that case, the main difference between the two commands is that 'more' is a 'pager' program, meaning that it stops at the end of every page and waits for the user. The 'cat' command will list everything in the file without stopping. One other thing that 'cat' does that 'more' does not is to concatenate (add/merge) files together. 'more' is not designed to do that. Lastly, some versions of 'more' can traverse a file forwards and backwards and have simple searching capabilities, which 'cat' does not.
What is the command to execute it sfc?
that is the command for system file checker.
