1. UNIX for Dummies Questions & Answers

Excuse me for this question really for dummies! I would like to know how sendmail works, obviously even in few words. If it uses a mail server or relay to send mail, if there is some check that sendmail makes to the from address and so on... Thank you very much. (3 Replies)

2. UNIX for Dummies Questions & Answers

ls displays files in tabbed output. Say a directory contains 3 files. ls will list all 3 in one line. So, I expect ls | wc -l to give 1, but it counts the nr of files and gives 3. Can someone explain how this works? (3 Replies)

3. Shell Programming and Scripting

I am trying to get a count of each line sub runit2 { my ($file1a, $file2a) = @_; my $file1_vala = $file1a->get; my $file2_vala = $file2a->get; open (FILE1a, "$file1_vala") or die; open (FILE2a, "$file2_vala") or die; chomp(my @strings = <FILE2a>); while (1) { foreach $pattern... (4 Replies)

4. Programming

pls explain me how this works.... DECODE (SUBSTR (field, 1, 1),'''', '''''' || field || '''','''' || field || '''') here field is a column in an oracle table.... (7 Replies)

5. Solaris

HI, Just another dummies questions: How i can determine what number of inode to use when creating filesystem? Thanks (4 Replies)

6. UNIX for Dummies Questions & Answers

When I try to execute script, I get message: >aa.pl zsh: command not found: aa.pl but >./aa.pl works OK. What to change in environment to force the former way to work? Thank you, Alex Z (4 Replies)

7. UNIX for Advanced & Expert Users

I have a program............ #include<stdio.h> #include<unistd.h> main() { if(fork == 0) { printf("Hi every body:p!!!!!!!!!!"); } } This program works with out any error. here fork is not a system call. It just act as a variable.But how it works without declaring it? What data type it... (19 Replies)

8. Shell Programming and Scripting

I found this command, sed -e 's/<*>//g', will return the content of a line with pattern something like this, <tag1>content</tag1>.. How does this works? What does sed -e 's/<*>//g' actually do? What if I wanted to get content of a line with pattern something like this, content? thanks.. (5 Replies)

9. Shell Programming and Scripting

Here's my code: awk -F '' 'NR==FNR { if (/time/ && $5>10) A=$2" "$3":"$4":"($5-01) else if (/time/ && $5<01) A=$2" "$3":"$4-01":"(59-$5) else if (/time/ && $5<=10) A=$2" "$3":"$4":0"($5-01) else if (/close/) { B=0 n1=n2; ... (2 Replies)

10. UNIX for Beginners Questions & Answers

Hi there, this may be a beginner's error, but I've been unable to find a solution on my own and by googling, and now I am really stuck on it. I am simply trying to move directories called for example CAT_Run01.ica to a directory with the corresponding number, Run01, in the same directory. For... (2 Replies)