Hi,
I am new to unix shell shell scripting. I have a specific requirement where I need to append comma's based on the max number of column in the file.
Eg:
If my source file look something like this,
sengwa,china
tom,america,northamerica
smith,america
walter
My output file... (8 Replies)
Is it possible to place a comma in the desired places, like 10spaces after or 15 spaces after, irrespective of the contents???
Ex:File: TEST
TEST:
vimalthomaswants to place a comma
can he do it in the desired places?
as per the above file, i need to place a comma after 10th space... (4 Replies)
Hi all,
I want to insert a string in a specified place of a very large file. I am giving an example of the task:
I love football.
Above is a sentence in a file and I want to insert a string "the" between love and football. It is not sure that where this particular line exists. It has to... (4 Replies)
Hi Experts,
I have called some.txt with the following content.
oracle HYRDSRVIHUB01 pts/0 TESTIHUB 07-JUN-10 CREATE TABLE
TESTIHUB PHONE ... (12 Replies)
Hi
I tried to put underscore in place of column in a big file with lots of oclumns using the programm
sed 's//_/g'
Its showing error
bash-3.2$ sed 's//_/g'saradrugbankgenedrugnewlist.txt >saradrugbankgenedrugnewlist3.txt
sed: -e expression #1, char 11: unknown option to `s'
if... (24 Replies)
Hello,
I have a file that I want to be able to insert a new line before every instance of a regex. I can get it to do this for each line that contains the regex, but not for each instance.
Contents of infile:
Test this 1...
Test this 2...
Test this 3... Test this 4... Test this... (2 Replies)
my file looks like this:
297 PC Closed 07/10/12 999000098 AMERICAN SOCIETY FOR HEALTHCAR 0.00 USD 1 NAI
i want to look line this:
297,PC,Closed,07/10/12,999000098,AMERICAN SOCIETY FOR HEALTHCAR,0.00,USD,1,NAI (4 Replies)
Hello expert friends,
I'm writing a script to capture stats using sar and stuck up at report generation.
I have around 10 files in a directory and need to merge them all vertically based on the time value of first column (output file should have only one time value) and insert comma after... (6 Replies)
Hi All,
I have a file which has data like
a,b
c,d
e,f
g,h
And I need to insert a new column at the begining with sequence no( 1 to n)
1,a,b
2,c,d
3,e,f
4,g,h
Please let me know how to acheive this in unix (3 Replies)
I want to bring values in the second column into single line for uniq value in the first column.
My input
jvm01, Web 2.0 Feature Pack Library
jvm01, IBM WebSphere JAX-RS
jvm01, Custom01 Shared Library
jvm02, Web 2.0 Feature Pack Library
jvm02, IBM WebSphere JAX-RS
jvm03, Web 2.0 Feature... (10 Replies)
Discussion started by: kchinnam
10 Replies
LEARN ABOUT V7
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)