cat command is used to display the contents of a small file
on terminal
$ cat first.txt
cat when supplied with more than one file will concatenate
the files without any header information
$ cat sample3.txt sample4.txt
More and less commands are used to view large files one
page at a time
$ more sample1.txt
/*sample1.txt will be displayed one page
at a time */
$ less sample1.txt
/*sample1.txt will be displayed one page
at a time */
gzip command is used to compress the file.
It provides the extension .gz and removes the original file
$ wc sample_copy.txt
65 2776 17333 sample_copy.txt
$ gzip sample_copy.txt
$ wc sample_copy.txt.gz
26 155 7095 sample_copy.txt.gz
gunzip is used to de-compress it.
$ gunzip sample_copy.txt.gz
head command displays the top of the file, when used without any option it will display first 10 lines of the file
$ head sample1.txt
Similarly tail command displays the end of the file. By
default it will display last 10 lines of the file
$ tail sample1.txt
/*display last 10 lines*/
tail or head with -n followed by a number will display that
many number of lines from last and from first respectively
$ head -n 20 sample1.txt
/* will display first 20 lines*/
$ tail -n 15 sample1.txt
/* will display last 15 lines */
Enjoy:-)
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