1. Shell Programming and Scripting

Hi, I am a beginner in Perl programming. Now i need to call a C program from a perl program ...Can any one please help me and give any details how i can do this. Thanks and Regards (3 Replies)

2. UNIX for Dummies Questions & Answers

Are the programs written on schedulers ,thread library , process management, memory management, et al called systems programs ? How are they different from the programs that implement functions like open() , printf() , scanf() , read() .. they have a prefix sys_open, sys_close, sys_read etc , right... (1 Reply)

3. Shell Programming and Scripting

I am trying to run a program called GMT using perl. Cannot make to run. I have tried using exec("date"); as a test but when I use exec($try); nothing happens. #!/usr/bin/perl print "$#ARGV\n"; if ($#ARGV != 3) { print "usage: jcdplot.perl\n"; exit; } $h = $ARGV;... (1 Reply)

4. Shell Programming and Scripting

Hi All, I have just started learning perl and was working on my one-liners tips and tricks. Instead of using the below command : perl -lape 's/(^From:).*/$1 Nelson Elhage <nelhage\@ksplice.com>/' i tried using the \k command using the below command but it gave no results: perl -lape... (2 Replies)

5. Shell Programming and Scripting

I am trying to work with a text file which has following format and trying ti run if elseif loop but fails. Any help is appreciated 289B ship N-grp 123 289C ship N-grp 123 289D ship N-grp 123 2CE1 flight N-grp 123 2CE2 flight N-grp 123 2CE3 flight N-grp 123 2CE4 flight N-grp 123 2DAF... (4 Replies)

6. Shell Programming and Scripting

Guys, i was trying a simple if-then-else statement in perl; but not getting any success in that. can you please help, where i am wrong. I tried $diff variable with double quotes as well, but no go. $region = $ARGV; $diff = $ARGV; if ; then ($date) = split(' ', `ssh -xC $san cat... (2 Replies)

7. Shell Programming and Scripting

Hi all I tried to remove duplicates using all code mentione dbelow but its not wroking it's seems busy please check it sort -u filename.txt perl -lne 'chomp; if(!defined $x{$_}){$x{$_}=1;print}' inputfile out of attached files log file(input) log2file(output) (9 Replies)

8. Shell Programming and Scripting

have issue where my elsif is always failing. Basically i have a file with sets of 2 lines, the 1st line that containing "ipwr" and the 2nd line containing a value or "unknown". if the 2nd line contains a value then i want to print the pair of lines. open (INFO, "temp.txt") or die; ... (3 Replies)

9. UNIX for Dummies Questions & Answers

Hey guys, Suppose i run passwd via bash shell. It is a suid program, which temporarily runs as root(owner) and modifies the user entries. However, when i write a C file and give 4755 permission and root ownership to the 'a.out' file , it doesn't run as root in bash shell. I verified this by... (2 Replies)

10. Shell Programming and Scripting

Experts - I have a snippet of code I can't figure out. I was hoping someone could help me here. I have a file of IPv6 address that I need to format correct. Example in: 2620:0:2d0:200::7 2620:0:2d0:200:a0:c 2620:0a:3f0:200:a0:c I need to convert them to:... (3 Replies)