|
|
Sponsored Content
Top Forums
UNIX for Dummies Questions & Answers
Substring not working if more than 1 space
Post 302228084 by prassu on Friday 22nd of August 2008 05:41:21 PM
08-22-2008
|
|
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hello, I'm searching for a proper way to let the kernel space ISR(implemented in a kernel module) wake up a user space thread on a hardware interrupt.
Except for sending a real-time signal, is it possible to use a semaphore?
I've searched it on google, but it seems impossible to share a... (0 Replies)
Discussion started by: aaronwong
0 Replies
2. Shell Programming and Scripting
Good afternoon! Im new at scripting and Im trying to write a script to
calculate total space, total used space and total free space in filesystem names matching a keyword (in this one we will use keyword virginia). Please dont be mean or harsh, like I said Im new and trying my best. Scripting... (4 Replies)
Discussion started by: bigben1220
4 Replies
3. AIX
Hi,
I am trying to grep a string which has two words separated by space.
I used a script to grep the string by reading the string in to a variable
command i used in the script is
echo "enter your string"
read str
grep $str <file>
it is working fine when the entered string is a single... (3 Replies)
Discussion started by: sekhar gajjala
3 Replies
4. Fedora
Hi,
I run Fedora 17.
I created a physical volume of 30GB on a disk with 60GB of space so there is 30GB of free space. On the physical volume, I created my volume group and logical volumes. I assigned all the space in the physical volume to my volume group. I need to add the 30GB of free space... (1 Reply)
Discussion started by: mojoman
1 Replies
5. UNIX for Dummies Questions & Answers
Hi,
I have a space delimited text file but I only want to change the first space to a tab and keep the rest of the spaces intact. How do I go about doing that? Thanks! (3 Replies)
Discussion started by: evelibertine
3 Replies
6. Shell Programming and Scripting
Hi I'm using ksh.
And i'm trying to get the substring like below.
but giving the following error
#!/bin/ksh
foo=teststring
bar=${foo:0:5}
echo $bar
And the error is
./sbstr_test.sh: bar=${foo:0:5}: bad substitution
what is wrong in this script. Please correct me
... (3 Replies)
Discussion started by: smile689
3 Replies
7. UNIX for Advanced & Expert Users
I created a awk state to calculate the number of success however when the query runs it has a leading zero. Any ideas on how to remove the leading zero from the calculation?
Here is my query:
cat myfile.log | grep | awk '{print $2,$3,$7,$11,$15,$19,$23,$27,$31,$35($19/$15*100)}'
02:00:00... (1 Reply)
Discussion started by: bizomb
1 Replies
8. Red Hat
Hi All,
During my virtual machine power on i have rc3.d script to accept user inputs like IP address. This script gets executed during first time boot up. It was working fine till my VM is using RHEL6.5. Now we migrated to RHEL 7 environment. While accepting the user inputs in console, I... (4 Replies)
Discussion started by: kalpeer
4 Replies
9. Shell Programming and Scripting
Hi Team,
I have written the shell script which returns the result of the disk space filesystems which has crossed the threshold limit in HTML Format. Below mentioned is the script which worked perfectly on QA system.
df -h | awk -v host=`hostname` '
BEGIN {
print "<table border="4"... (13 Replies)
Discussion started by: Harihsun
13 Replies
10. Shell Programming and Scripting
hi,
I'm trying to calculate IP addresses and their respective calls to our apache Server. The standard format of the input is
HOST IP DATE/TIME - - "GET/POST reuest" "User Agent"
HOST IP DATE/TIME - - "GET/POST reuest" "User Agent"
HOST IP DATE/TIME - - "GET/POST reuest" "User Agent"
HOST... (2 Replies)
Discussion started by: busyboy
2 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)