REV(1) User Commands REV(1)NAME
rev -- reverse lines of a file or files
SYNOPSIS
rev [-V] [-h] [file ...]
DESCRIPTION
The rev utility copies the specified files to standard output, reversing the order of characters in every line. If no files are specified,
standard input is read.
-V, --version
Output version information and exit.
-h, --help
Output help and exit.
AVAILABILITY
The rev command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
util-linux April 2011 util-linux
Greetings to all,
I have not been in a unix environment for many years, but I am back.
Question is regarding how to setup or check how it's configured is DNS on a SPARCstation 20 runing SunOS 4.1.4 2 sun4m
I have a DNS server on the network and would like the sun box to use it for it's name... (22 Replies)
Hi,
My records are like this
BSC403_JAIN03|3153_TropicalFarm_LIMJM1-3_97|
BSC403_JAIN03|3410_PantaiAceh_PCEHM1_4_97|
BSC406_BMIN02|1433_JomHebohTV3_COW7M1_11_97|
I want to extract the value before _97|
This command
BSC_ID=`echo $DATA | cut -f5 -d"_"`
gives me
_97|, 4, 11
and by... (16 Replies)
Environment: Sun UNIX
Language: Bourne Shell
Problem:
I am writing a script that allows user to key in a directory. Example: /root/tmp.
Since the user can key in anything he/she wants, I need to validate to make sure that he/she does not key in anything funny i.e.... (37 Replies)
Hi,
How can I remove the line beak in the following case if the line begin with the special char “;”?
TEXT
Text;text
;text
Text;text;text
I want to convert the text to:
Text;text;text
Text;text;text
I have already tried to use... (31 Replies)
how can i reverse the line order in text files?
(but total number of the lines is not constant )
for example i have a file like this:
line1
line2
line3
.
.
lineN
i wantto make it like this:
lineN
.
.
.
line3 (26 Replies)
I have a file which is
DFDG
START
DSFDS
DSDS
XXX
END (VIO)
AADD
START
SDSD
FGFG
END
and I have to print the lines between START and END (VIO). In the files there are multiple places where START would be followed by END with few lines in between but I need to print only if START is... (18 Replies)
Hi All,
This is very urgent, I've a data file with 1.7 millions rows in the file and the delimiter is cedilla and I need to format the data in such a way that if the NF in the next row is less than 1, it will append that value to previous line.
Any help will be appricated.
Thanks,... (17 Replies)
Please note, this information was copied from vbseo.com, now showing a database error. This is posted for reference since vbSEO seems to be going out of business:
If you ever need to uninstall vBSEO , you can use the following instructions. Make sure you carefully follow each step.
Login... (37 Replies)
Hi All,
I am new to Unix and I have one challenge and below are the details.
I have pipe delimited text file in that data has span into multiple lines instead of single line.
Sample data.
Data should be like below for entire file.
41|216|398555|77|provided complete NP outcome data ... (21 Replies)
i've vi'ed some scripts in the past and when i did, my screen froze. i had to go to another terminal and kill the vi process before i was able to get back my screen.
how can i replicate this behavior on purpose? i want be able to do this also if the file or script was doubled clicked, say... (17 Replies)
Hi,
Suppose I have a command:$ cmd1 | cmd2I need to send a message from cmd2 to cmd1 when I receive some a certain message from cmd1. How to do this?
I think that I have to know cmd1's PID and then in cmd2 send a message to this PID. How? (24 Replies)
Instead of the slow and not readable tooltips with the preview of the thread content in forum view, I have added the preview with mouseover (see attached movie).
Let me know if you want a different kind of preview (animation, duration font-color, size, etc,)
Thanks.
<script>... (29 Replies)
Hello,
This is a bit complicated for me.
My scenario in MyFile:
Search string1,
When string1 is found, grep the line containing string1, go back over that line in upward direction and grep the first line containing string2.
Here is an example:
MyFile
His email address... (17 Replies)
Hi Everybody,
Hope everybody is having fun with their Solaris installations and not pulling out too much of whatever hair they have left so far. :)
Just for sport, I bought an old Netra 240 used by Northern Telecom Turkish subsidiary Netas here in Turkey. My hope is to turn this into an ugly... (33 Replies)
Hey,
Now that I'm caught-up on a number of forum tasks, I can turn my attention to the next-generation UserCP (and learn VueJS) for the site.
Today I created this (not yet functional) demo using Vue;
https://www.unix.com/cp/index.php
What do you think? (36 Replies)