Write a shell script called GetMyStuff.sh that will provide the above information (the script must be a executable, and must work regardless of which directory it is in). Also, just saying cat MyStuff.txt is not sufficient. (1.0%)
A pipeline is the combination of at least 2 commands, where the output of command1 is the input for command2. The syntax is command1 | command2 where | is the pipeline operator. Read the man pages about the ls and wc commands. Devise a minimal pipeline command that will print the number of files and subdirectories in the current directory (including hidden ones, but not the current and parent directory entries). Put the answer into a text file named MyPipe.txt. (0.5%)
Describe the difference between wc `grep -l int *` and grep -l int * | wc. Why is it not giving the same output? Put the answer into a text file named Explanation.txt.(1.0%)
A minimal pipeline command that will print the number of files and subdirectories in the current directory is
1)$ ls -a1 | wc -l
Here ls -a1
-a: to get the directories and subdirectories including hidden files
-1: to make sure to list 1 directory per line
wc -l
-l: to count number of lines in a file
So we are piping the ouput of ls -a1 to the wc to get the number of files and subdirectories.
To put the answer into MyPipe.txt
$ ls -a1 | wc -l > MyPipe.txt
Difference between wc `grep -l int *` and grep -l int * | wc
Explanation.txt
$ wc `grep -l int *`
This is nothing but the count of newline, word, and byte counts for all the files in the current directory containing int
$ grep -l int * | wc
Here, first of all we are finding all the files which contains int in them and then piping the output to the wc. So we are printing out the newline, word, and byte counts of the output of grep -l int *
For any doubts feel free to ask.
Regards.
Write a shell script called GetMyStuff.sh that will provide the above information (the script must be...
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