I am passing a varaible to from Shell to awk then I am doing some maniplation for that variable inside awk. I want that maniplated variable value back to shell , Is this possible .Please let me know. (12 Replies)
Hi again
I have the follwing - cat ~/ABCFILE | grep "$SYSTEM" | grep "$USERNAME"
What I'm looking to do is have the variable for $SYSTEM determined by the user making a selection from a numbered list. So, input 1 would be system ABC etc.
I'm very puzzled as to how to go about this?
Any... (3 Replies)
The code im having problems with is highlighted in red, upon selecting option 2 on the main menu (highlighted green) my echo "NETWORK CONNECTIVITY" command seems to get overlooked and the resulting output is "Thank you for using the Operator Administrative Tool." being displayed. Can anyone tell me... (2 Replies)
I want something that would show up basically like:
Menu
-----
1) Option 1
2) Option 2
3) Option 3
Pick one:
I tried menu = " Menu \r\n ----- \r\n 1)Option 1 \r\n..............etc etc etc"
but that didnt work (just got the whole menu one one line, with the... (2 Replies)
hey all, me again....having a problem with my code, where I essentially am trying to show a menu, have the user select an option (from 1 to 5), then display which selection they picked...
#!/bin/bash
# A LIST OF THE ERROR MESSAGES AND THE PROPER SYNTAX:
error_0="Correct amount of... (1 Reply)
Hi,
In my perl script I want to check whether *.csv files exist and take the count .
Below is the code:
$path = “/home/usr/jan/myfiles”
my $File_Count = `ls *.csv | wc -l `; # Checks in the current directory #Works fine if files exists.
my $File_Count = `ls $path/*.csv | wc -l `; # I need... (2 Replies)
i had this unix korn shell code that connects to oracle database and execute the oracle procedure. i need to add a variable that indicates the oracle procedure failed. basically the variable is to check if the oracle procedure failed it will assign 1 and when the variable is equal to 1 it will not... (4 Replies)
Hello,
Been trying to build a menu with whiptail lately. However, my code doesn't seems to be working even though when i compared to other similar code they looks the same.
#!/bin/bash
clear
whiptail --msgbox "Entering networking sub-menu" 20 78
whiptail --title Networking --menu... (8 Replies)
As a result of whiptail menu option I am getting a data from a file.
Naturally it is output to terminal as stdour.
I like to redirect the output back to the menu.
It can be done with single input of line of text , see attached.
I just cannot see where or how the sample... (0 Replies)
I may have asked this before, so forgive OF.
Problem:
I can pass positioning array as -- menu option to whiptail, but it does not show in the whiptail form as an array - only single (first member "lsusb" ) entry / line shows up.
Code:
DynamicEntry=$(whiptail \
--title "DEBUG... (1 Reply)
Discussion started by: annacreek
1 Replies
LEARN ABOUT PLAN9
truncate
TRUNCATE(1) User Commands TRUNCATE(1)NAME
truncate - shrink or extend the size of a file to the specified size
SYNOPSIS
truncate OPTION... FILE...
DESCRIPTION
Shrink or extend the size of each FILE to the specified size
A FILE argument that does not exist is created.
If a FILE is larger than the specified size, the extra data is lost. If a FILE is shorter, it is extended and the extended part (hole)
reads as zero bytes.
Mandatory arguments to long options are mandatory for short options too.
-c, --no-create
do not create any files
-o, --io-blocks
treat SIZE as number of IO blocks instead of bytes
-r, --reference=RFILE
base size on RFILE
-s, --size=SIZE
set or adjust the file size by SIZE bytes
--help display this help and exit
--version
output version information and exit
The SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (pow-
ers of 1000).
SIZE may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round
down to multiple of, '%' round up to multiple of.
AUTHOR
Written by Padraig Brady.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report truncate translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO dd(1), truncate(2), ftruncate(2)
Full documentation at: <http://www.gnu.org/software/coreutils/truncate>
or available locally via: info '(coreutils) truncate invocation'
GNU coreutils 8.28 January 2018 TRUNCATE(1)
08-16-2012
