How do you get the last line of a cat file?
To look at the last few lines of a file, use the tail command. tail works the same way as head: type tail and the filename to see the last 10 lines of that file, or type tail -number filename to see the last number lines of the file.
How do I find the first and last record in Unix?
sed -n ‘1p;$p’ file. txt will print 1st and last line of file. txt . After this, you’ll have an array ary with first field (i.e., with index 0 ) being the first line of file , and its last field being the last line of file .
How do you go to the last line of a file in Linux?
In short press the Esc key and then press Shift + G to move cursor to end of file in vi or vim text editor under Linux and Unix-like systems.
How to read the first line of a file using cat?
How do I read the first line of a file using cat? You don’t need cat. will work fine. You don’t, use head instead. You could use cat file.txt | head -1, but it would probably be better to use head directly, as in head -1 file.txt. This may not be possible with cat.
How to get only the last line of a file?
I am writing a shell script in OSX (unix) environment. I have a file called test.properties with the following content: Using cat command, how can I get only the last line of the file ? Don’t use cat. tail was meant for this usecase exactly:
How to print the first 10 lines of a file?
Print the first 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name. With no FILE, or when FILE is -, read standard input.
How to read the first line of a CSV file?
Moreover, because read is built into bash and this usage requires no subshell, it’s significantly more efficient than approaches involving subprocesses such as head or awk. Use the below command to get the first row from a CSV file or any file formats. There is plenty of good answer to this question.