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awk variables

Posted 05-30-2011 at 01:42 PM by karthik3152

awk variables
In awk there are many default variables which can be used .
We will see each of them with examples:
acer@ubuntu:~$ cat > record1
John robinson
koren inc
phno:555555555


usha
yyy technologies
ph no:546456456


dddd
aaa technologies
ph no:44444444


acer@ubuntu:~$

consider the above record in which our requirement is to produce a single line...
LQ Newbie
Posted in Uncategorized
Views 412 Comments 0 karthik3152 is offline
Old

awk variables

Posted 05-30-2011 at 01:40 PM by karthik3152

awk variables
In awk there are many default variables which can be used .
We will see each of them with examples:
acer@ubuntu:~$ cat > record1
John robinson
koren inc
phno:555555555


usha
yyy technologies
ph no:546456456


dddd
aaa technologies
ph no:44444444


acer@ubuntu:~$

consider the above record in which our requirement is to produce a single line...
LQ Newbie
Posted in Uncategorized
Views 264 Comments 0 karthik3152 is offline
Old

listing available disks and partitions

Posted 05-30-2011 at 07:30 AM by neonsignal

The format disk utility fdisk is a quick way of showing available disks and partitions (including those that are not mounted).
Code:
fdisk -l
Further information about the mounted file systems is provided by df, including used space, available space and the mount points.
Code:
df
Senior Member
Posted in Uncategorized
Views 247 Comments 0 neonsignal is offline
Old

recursively setting permissions

Posted 05-30-2011 at 07:26 AM by neonsignal

The chmod itself can be used recursively to set the permissions on a directory and the subtree of that directory:
Code:
chmod -R u=rwX,go=rX directory
the 'X' flag only sets execute permissions if the node is a directory or already has execute access.

Alternatively, find can be used to give a little more control over the changes. For example, sometimes it is useful to clear all the execute bits after data files have been transferred from a FAT32 system....
Senior Member
Posted in Uncategorized
Views 218 Comments 0 neonsignal is offline
Old

Scraping the barrel....

Posted 05-29-2011 at 09:03 AM by peonuser
Updated 05-31-2011 at 09:22 AM by peonuser

Some code snippets to play with:

#1
----------------------------------------------------------------
Code:
#!/bin/sh
# Determine the current U.S. Terrorist Threat Advisory level, and output it to
# a serial device
#
# Written by Matt Mets in 2008
# Modified by Computothought in 2011
# This code is released into the public domain, attribution is appreciated

#### Configuration Options ##############################################
...
Member
Posted in Uncategorized
Views 372 Comments 0 peonuser is offline

  



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