新手报到！

a002041

#!/usr/bin/perl
$num = $ARGV[0]*$ARGV[0]*3.14*4.0;
print "$num\n";
3

jimonanhai3804

helphelphelphelphelphelphelphelp

xiudou401

!/usr/bin/perl
$ARGV=@ARGV;
print "$ARGV\n",
"@ARGV\n";
4

a002041

!/usr/bin/perl
if($ARGV[0]=~m/\d.+\d/)
{
print "true\n";
}
else
{
print "false\n";
}
6

a002041

#!/usr/bin/perl
$lengh = @ARGV;
$num = $lengh*4;
print "$num\n";

junlee1986

我也是新手，来凑下热闹

anloxm

1.List the (non-hidden) files in "/usr/local/linuxgym-data/gutenberg" ordered based on modification time, from the least recently modified ("oldest") to the most recently modified ("newest"), and store this list in a file called "oldest_to_newest" in your home directory. Include only the file names. Do not include the path prefixes.
2.The "cat" command can be used add line numbers to a file. Add line numbers to the file, foo.txt located in
/usr/local/linuxgym-data/gutenberg. Save the result to the file saucy_salamander .
Hint 1: use the man page to see the options for cat.
Hint 2: use q to quit man.
3.List all files in directory "/usr/local/linuxgym-data/gutenberg" whose name starts with a "0" or a "2" or a "w" and also contains an "s" character, store this list into a file called
"trustry_tahr". The filenames must be stored with absolute pathnames. Ensure that this is exactly the output of command "ls".

anloxm

4.The wc command counts the number of words lines and characters in one or more files. Use wc to find the number of words
in the files /usr/local/linuxgym-data/gutenberg/foo.txt and /usr/local/linuxgym-data/gutenberg/words.
Redirect the results of the wc command to a file named raring_ringtail.
Include the full path of the input files in the output .
raring_ringtail should contain 3 lines one for each file and one for the total. The data for foo.txt should be on the first line.

Hints: use the man page to find the words option.
5.Use the command "wc" to count the total number of lines in files matching filename pattern: "/usr/local/linuxgym-data/gutenberg/7w*". Store the exact output of the wc command when used with the "line counts" option into file "lines-count.output". Ensure that the filename within the file contains the full pathname. (Hint: type "man wc")
6.Make a list of all the files from directory /usr/local/linuxgym-data/gutenberg whose names start with character "0" and contain string "rd" anywhere, and save this list in a file called 0_rd_files.txt. Ensure that only the filenames are listed WITHOUT the pathnames as a prefix.

anloxm

7.Create a directory called "not-7-files" under your home directory. Copy all the files from the directory "/usr/local/linuxgym-data/gutenberg" whose names do not start with digit "7" into your "not-7-files" directory.
8.Write a bash script called ten_script.sh that takes one argument (a file name).
The script should output the number of words in the first 10 lines of the named file.
Only the number of words should be printed.
Hint: use the head command to get the first 10 lines of a file.
9.Create a file called "anne-words.txt" containing only the lines of "/usr/local/linuxgym-data/gutenberg/12frd10.txt" containing the name (WORD) 'Anne'. Note that 'Annette' and 'Annemarie' do not count. Ensure there are no extra blank lines in the file "anne-words.txt" and the lines should be in the same order as in 12frd10.txt.
10.Create a file called "diminutives.txt" containing, IN THE ORIGINAL ORDER, only the lines of

/usr/local/linuxgym-data/census/femalenames.txt

containing string 'ELLE' or string 'INE' as the last part of a word.

jackjokeryang

1.   ls -tr /usr/local/linuxgym-data/gutenberg > oldest_to_newest

2.   cat -n /usr/local/linuxgym-data/gutenberg/foo.txt > saucy_salamander