Sponsored Content
Full Discussion: Using cat and awk.......
Top Forums Shell Programming and Scripting Using cat and awk....... Post 302376169 by ghostdog74 on Monday 30th of November 2009 09:14:56 PM
Old 11-30-2009
if you are trying to create junk.txt , and assuming it hasn't been created yet, then why are you reading it using the while loop first?? do it this way
Code:
bdf <options> | while read ....
do
    # do your stuff
done

 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Difference between cat , cat > , cat >> and touch !!!

Hi Can anybody tell the difference between Difference between cat , cat > , cat >> and touch command in UNIX? Thanks (6 Replies)
Discussion started by: skyineyes
6 Replies

2. Shell Programming and Scripting

cat & awk

Hi there, Can show some hit why i got this error? For eg i have a.txt in which consist of contents as below 1|781494-0015|IV\|I||C|RECHARGE|Success\|V\|\||2007-12-04 02:33:13.000| 2|762405-0405|IV\|I||C|RECHARGE|Success\|V\|\||2007-12-04 02:33:17.000| In fact , i want to perfrom to have... (2 Replies)
Discussion started by: rauphelhunter
2 Replies

3. Shell Programming and Scripting

cat in the command line doesn't match cat in the script

Hello, So I sorted my file as I was supposed to: sort -n -r -k 2 -k 1 file1 | uniq > file2 and when I wrote > cat file2 in the command line, I got what I was expecting, but in the script itself ... sort -n -r -k 2 -k 1 averages | uniq > temp cat file2 It wrote a whole... (21 Replies)
Discussion started by: shira
21 Replies

4. UNIX for Dummies Questions & Answers

tr, sed, awk, cat or scripting

I need to change all Newline caracters (\12) to Fieldseparator(\34). tr -A '\12' '\34' <file1> file2 Replace all delete (\177) with Newline (\12) tr -A '\177' '\12' <file2> file3 Put the name of the file first in all rows. awk '{printf "%s\34%s\n", FILENAME,$0} file3 > file4 So far no... (6 Replies)
Discussion started by: MrKlint
6 Replies

5. Shell Programming and Scripting

Understanding Awk and Cat

Hi Guys, I was recently come across some code to hopefully learn a little bit about putting Shell commands into PHP application to run on a Linux server. However, I don't understand the command AT ALL... and was wondering if anyone can interpret it: cat userIDs.dat | awk '{s=s+1; if... (1 Reply)
Discussion started by: jordRiot
1 Replies

6. UNIX for Dummies Questions & Answers

awk+cat

Hi, I am doing this: ll -tr | awk '{print $6, $7, $8, $9}' the result is: Dec 30 2008 text1.txt Mar 4 2009 text2.txt Apr 10 2009 text3.txt and now I want to show the content of $9 using below: ll -tr | awk '{print $6, $7, $8, $9}' ; '{cat $9}' (25 Replies)
Discussion started by: messi777
25 Replies

7. UNIX for Dummies Questions & Answers

How to pass cat file in awk statement?

Hi, I am working on kernel parameters, want to check values under /proc/sys/kernel below I tried for kernel.sem SEMMNS: 4096 cat /proc/sys/kernel/sem | awk '{print $2}' awk '{ if ($2 < 33000) print }' /proc/sys/kernel/sem |awk '{print $2}' 32000 The above... (7 Replies)
Discussion started by: stew
7 Replies

8. Shell Programming and Scripting

Spacing off when files combined using awk or cat

I have 133 .txt files in a directory that I am combining into 1 file. The problem is when I use awk or cat to combine the files I get out put like this: output 85 138662360 KCNT1 86 138662962 KCNT1 82 138657053 KCNT1 83 138657635 KCNT1 95 138646881 KCNT1... (12 Replies)
Discussion started by: cmccabe
12 Replies

9. Shell Programming and Scripting

Need to add prefix using sed or awk from cat the file

I need the use sed or AWK using cat the file Node1 TDEV RW 1035788 TDEV RW 1035788 Server1 TDEV RW 69053 Server2 TDEV RW 69053 TDEV RW 103579 Server3 TDEV RW 69053 server4 RDF1+TDEV RW 69053 RDF1+TDEV RW 517894 RDF1+TDEV RW 621473 server6 TDEV RW 34526 TDEV RW 34526 (22 Replies)
Discussion started by: ranjancom2000
22 Replies
bdf(1M) 																   bdf(1M)

NAME
bdf - report number of free disk blocks (Berkeley version) SYNOPSIS
type [filesystem|file] ... ] DESCRIPTION
The command displays the amount of free disk space available either on the specified filesystem for example) or on the file system in which the specified file (such as is contained. If no file system is specified, the free space on all of the normally mounted file systems is printed. The reported numbers are in kilobytes. Options The command recognizes the following options: Display information regarding file system swapping. Report the number of used and free inodes. Display information for local file systems only (for example, HFS and CDFS file systems). Do not sync the file system data on the disk before reporting the usage. Note that the data reported by may not be up to date. Report on the file systems of a given type (for example, or RETURN VALUE
The command returns 0 on success (able to get status on all file systems), or returns 1 on failure (unable to get status on one or more file systems). WARNINGS
If file system names are too long, the output for a given entry is displayed on two lines. The command does not account for any disk space reserved for swap space, or used for the HFS boot block (8 KB, 1 per file system), HFS superblocks (8 KB each, 1 per disk cylinder), HFS cylinder group blocks (1 KB - 8 KB each, 1 per cylinder group), and inodes (currently 128 bytes reserved for each inode). Non-HFS file systems may have other items not accounted for by this command. AUTHOR
was developed by the University of California, Berkeley. FILES
Static information about the file systems. Mounted file system table. File system devices. SEE ALSO
df(1M), fstab(4), mnttab(4). bdf(1M)
All times are GMT -4. The time now is 03:13 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy