Visit Our UNIX and Linux User Community


AWK script for directory listing using GREP


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting AWK script for directory listing using GREP
# 1  
Old 07-21-2009
AWK script for directory listing using GREP

Hi, All -

script1.awk contains the following script:

BEGIN {
printf "The following are directory files:"
"ls -l | grep '^d' | {print $0}"
printf "There were "NR" directories in this list."
}


When I run the script, Here is what I get:

$ awk -f script1.awk
The following are directory files:There were 0 directories in this list. $

When I run "ls -l | grep '^d'" by itself, I get 20 directories. How can I correct this script?
# 2  
Old 07-21-2009
Should be something like:

Code:
BEGIN{
  printf "The following are directories:\n"
  while(("ls -l|grep '^d'"|getline ) > 0) print
}

Regards
# 3  
Old 07-21-2009
Hi, Franklin52 -

HTML Code:
BEGIN {
    printf "The following are directories:\n"
    while(("ls -l|grep '^d'"|getline ) > 0) print
      }
END {
  print "There were "NR" directories in this list."
 }
The directory listing part is working... How do I fix the "NR" line? Right now it is not returing anything.
# 4  
Old 07-21-2009
Try this:

Code:
BEGIN{
  printf "The following are directory files:\n"
  while(("ls -l|grep '^d'"|getline ) > 0){print;i++}
  print "There were "i" directories in this list."
}

# 5  
Old 07-21-2009
I was able to complete my task running the above script. Thank You!

Previous Thread | Next Thread
Test Your Knowledge in Computers #80
Difficulty: Easy
Many operating systems today, including Android, Chrome OS, Steam OS, and myriad embedded systems for devices, are based on Linux.
True or False?

10 More Discussions You Might Find Interesting

1. Homework & Coursework Questions

Listing the files in a directory

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: A script that takes any number of directories as command line arguments and then lists the contents of each of... (3 Replies)
Discussion started by: Phaneendra G
3 Replies

2. Shell Programming and Scripting

Directory listing

Hi, I have a directory with a bunch of files say around 150K. I want the directory's path and the filenames printed to a text file. Example: If I am in the directory /path/test and the files in this directory are My output file should be like this Thanks in advance ----------... (4 Replies)
Discussion started by: jacobs.smith
4 Replies

3. Shell Programming and Scripting

Script for listing specific filename in 3 directory

I used to work in perl but I would like to try now bash. Here's my problem I wanted to search for specific filename (ls -ltrh) on 3 directories.. Example ls -ltrh | grep "string" /dir1 /dir1/dir2 /dir1/dir2/dir3 I wanted to get the result to be copied on a different directory. Sample... (2 Replies)
Discussion started by: lhareigh890
2 Replies

4. Shell Programming and Scripting

Directory Listing Help

i have searched through this site and have found some useful information but i'm struggling with one thing. In my script i am created a start and end file so I can get a listing of the files within those two files. However I want to exclude any sub-directories in this listing. Below are the... (8 Replies)
Discussion started by: J-DUB
8 Replies

5. Shell Programming and Scripting

Shell Script Passing Parameters For Directory Listing

i have this basic piece of code that i am trying to debug to accept input parameter to be able to display a directory listing of files. cd /u02/app/eatv/dev/out CURDIR=`pwd` echo directory listing of $CURDIR echo if ; then ls -latr else ls -latr $1 fi basically if the script... (9 Replies)
Discussion started by: wtolentino
9 Replies

6. Shell Programming and Scripting

Listing a directory via a script using variables

In my script I need to list the directory, where the generic name of the files will change, in my test case its set to TEST_*.mqsc. I wrote a small test script as below, but it just does not pip the listing to a file. Any idea why? dir='C:/cygwin/var/log/img/aut/' file=TEST01_*.mqsc ls $dir... (4 Replies)
Discussion started by: gugs
4 Replies

7. UNIX for Dummies Questions & Answers

Sorting Directory Listing

If I do an ls -l on a directory I get this: -rw-r--r-- 1 root other 5248094 Jun 24 03:56 monitor.log.7 -rw-r--r-- 1 root other 5248303 Jul 11 11:19 ct.log.1 -rw-r--r-- 1 root other 5248907 Jun 29 06:01 ct_monitor.log.5 -rw-r--r-- 1 root other 5249042 Jun 19... (1 Reply)
Discussion started by: Sepia
1 Replies

8. UNIX for Dummies Questions & Answers

How can i get directory listing?

Hai friends is there any command in unix that display only directories... (I have 5 directories in my home directory, and i also have some files along with directories...But when i tried to show the directory listing using the command ls -d i wasn't presented by the directory listing...Please... (2 Replies)
Discussion started by: haisubbu
2 Replies

9. UNIX for Dummies Questions & Answers

Timestamp in directory listing

Hi, I need a help. I want to see all the files in the directory with the Time Stamp. I use the following command. $ls -lt This displays the files with time stamp, but not all the files. Only last few months, the files are displayed with timestamp, the old files are only have dates. ... (2 Replies)
Discussion started by: vijashok
2 Replies

10. UNIX for Dummies Questions & Answers

Recursive directory listing without listing files

Does any one know how to get a recursive directory listing in long format (showing owner, group, permission etc) without listing the files contained in the directories. The following command also shows the files but I only want to see the directories. ls -lrtR * (4 Replies)
Discussion started by: psingh
4 Replies

Featured Tech Videos