Since there is only one input file and one output file in your original code:
you could put all of your script in a group and redirect the input and output of the group instead of redirecting each command in the group:
This User Gave Thanks to Don Cragun For This Post:
Hi,
In a shell script I am makin use of 3 files f1,f2 and f3.txt.
When the Unix server is restarted I want to delete all these 3
files if they are existing.
( I suppose I will have to use this command
rm /thefilepath/f*
but dont know in which script to use.)
Anyone knows what can be... (6 Replies)
I need a command which filters rows ONLY NOT beginning with '*'
So far I have following NOT sufficient command, because it does not include ALL possible literals except of '*'
grep ^ INPUT_FILE >>OUTPUT_FILE
Is it possible to write something like
grep NOT ^
INPUT_FILE... (3 Replies)
Hello. I have the following issue: my txt file has the following format:
train/dr4/fklc0/sx175.txt
0 80282 Severe myopia contributed to Ron's inferiority complex.
train/dr4/fklc0/sx355.txt
0 42906 Dolphins are intelligent marine mammals. train/dr4/fklc0/sa2.txt
awk 'NR%2==0' test1.txt >... (4 Replies)
Hello. I have the following issue: my txt file has the following format:
train/dr4/fklc0/sx175.txt 0 80282 Severe myopia contributed to Ron's inferiority complex. train/dr4/fklc0/sx355.txt 0 42906 Dolphins are intelligent marine mammals. train/dr4/fklc0/sa2.txt
With the... (1 Reply)
Hi All,
I recently downloaded the Linux kernel source code, added them all to a project in MS VC++ and plan to read through it so that I can improve the way I code, read/understand a large code database and hopefully contribute something to the development of the Linux OS.
I have taken a... (3 Replies)
Hi Folks,
I am again here with a peculier problem.
Please see the code
root@celdws01: # sar -u -f /var/adm/sa/sa21
SunOS celdws01 5.9 Generic_118558-34 sun4u 12/21/2011
10:10:09 %usr %sys %wio %idle
10:10:09 unix restarts
Can anyone help me in... (9 Replies)
Hi,
I am facing issues with the below:
I have a lookup file say lookup.lkp.This lookup.lkp file contains strings delimited by comma(,).
Now i want to read this command from file and execute it.
So my code below is :
Contents in the lookup.lkp file is :
c_e,m,a,`cd $BOX | ls cef_*|tail... (7 Replies)
Hi
I have jobs (some 1000) defined in a file and I want to read those jobs and run a a command.
For example:
jobs.txt
abc
efg
I want to read the entire file and run the following command
Delete -JOB "abc"
Deleteing abc...
Delete -JOB "efg"
Delete efg...
Can somebody help me... (4 Replies)
hi
when i am trying to check the file size using du command in shell script but getting a below error, although the file is present
du: cannot access `LOGS_18-08-20.tar.gz': No such file or directory
below is snippet of script
cd /home
dt=$(date --date="yesterday" +"%y-%m-%d")
du ... (3 Replies)
Discussion started by: scriptor
3 Replies
LEARN ABOUT DEBIAN
vselect
vselect(1Vi)vselect(1Vi)NAME
vselect - select objects from a Vista data file
SYNOPSIS
vselect [-option ...] [infile] [outfile]
DESCRIPTION
vselect copies selected objects from an input file to an output file.
Command line options specify which objects are to be copied. Objects may be selected by type (e.g., all images), by name, by the value of
some attribute, or by position within the input file.
COMMAND LINE OPTIONS
vselect accepts the following options:
-help Prints a message describing options.
-in Specifies a Vista data file from which objects are to be selected.
-out Specifies where to write the selected objects as a Vista data file.
The input and output files can be specified on the command line or allowed to default to the standard input and output streams.
In addition, exactly one of the following options must be used to specify the objects to be selected:
-object i Select the ith object. Objects in the input file are numbered consecutively from 0.
-name name Select any object whose attribute name is name.
-type type Select any object whose type is type.
-attr name value
Select any object having an attribute with the specified name and value.
Finally, any of these selection criteria can be inverted:
-not Reverses the sense of the selection criterion.
EXAMPLES
To select the first object from a file:
vselect -object 0 < infile > outfile
To select the attribute named ``cantaloupe'' from a file:
vselect -name cantaloupe < infile > outfile
To select everything but images from a file:
vselect -type image -not < infile > outfile
To select images with ubyte pixels from a file of images:
vselect -attr nbands ubyte < infile > outfile
AUTHOR
Art Pope <pope@cs.ubc.ca>
Vista Version 1.12 24 April 1993 vselect(1Vi)