I need to remove every second and every third line from a file. My idea was to do it in two operations. First every third line, then every second line. The problem is that i can't find out how to do it. I tried to look for some sed oneliners, but couldn't find any.
Suggestions? (4 Replies)
Hi,
I need some help in removing the header (first line) and the trailer (last line) in a give file...
The data file actually comes in EBCDIC format and I converted it into ASCII..
Now I need to strip off the first line and the last line..
I think we can use sed to do something like this:... (2 Replies)
hi sir,
i need help..how to remove last line of the each file
for example i have files a.txt ,b.txt and so on..i wanted to delete last list of each file..the patten not same for each file..any help?
thanks in advance (3 Replies)
Hi all, i have a text file similar to belowA1
A2
A3
B1 ... .... *** # first occurance
B1 ... .... *** # second occurance
B1 ... .... *** # third occurance My desired output is B1 ... .... *** # second occurance
B1 ... .... *** # third occurance I want to remove the first line that is after... (3 Replies)
Hi ,guys. I have one question:
I want to write a script which removes a line with certain string from a file, for example
The name of the file is: "passwd", the contents of it is below:
*************************
...
brownj2:x:5000:
hynesp:x:5001:
leeb:x:5002
dioxna:x:5003
...
... (2 Replies)
Is there an easy way to remove the first line of a file so that the file:
aaron
benjamin
cecilia
daniel
elliot
fernando
would become
benjamin
cecilia
daniel
elliot
fernando (4 Replies)
I have a file output.txt. File looks like this
name1 10
name2 2
name3 5
I get a number n and I need to remove all lines which has number (after name) smaller or equal to n number.
After that I need to write lines from file and my output must be like this:
Output: 'name1 10'
Output: 'name2... (1 Reply)
How can I use bash to remove the first line of a file? (3 Replies)
Discussion started by: locoroco
3 Replies
LEARN ABOUT DEBIAN
ruby-build
RUBY-BUILD(1)RUBY-BUILD(1)NAME
ruby-build - compile and install Rubies
SYNOPSIS
ruby-build [-v|--verbose] [-k|--keep] definition prefix
ruby-build --definitions
ruby-build --version
ruby-build [-h|--help]
rbenv install [-k|--keep] definition
DESCRIPTION
ruby-build provides a simple way to compile and install different versions of Ruby on UNIX-like systems.
ruby-build downloads, builds and installs the Ruby version specified in a definition into a prefix directory. Definitions can be chosen
from the list of installed definitions or by specifying a file path for a definition.
rbenv(1) users can also use the provided rbenv install command, which installs Rubies into the rbenv directory.
OPTIONS --definitions
List available definitions.
-k, --keep
Don't delete source code after installation.
-v, --verbose
Display compiler messages on standard output.
--version
Show ruby-build version and exit.
-h, --help
Show usage information and exit.
EXAMPLES
Install Ruby 1.9.3 (MRI, patch level 0) to ~/rubies/mri-1.9.3
$ ruby-build 1.9.3-p0 ~/rubies/mri-1.9.3
Install Ruby Enterprise Edition 1.8.7 (patch level 2011.03) for rbenv(1):
$ rbenv install ree-1.8.7-2011.03
Install Ruby from a custom definition into ~/your-ruby:
$ rbenv install /path/to/your/own/ruby/definition ~/your-ruby
ENVIRONMENT
CC Sets the path to the C compiler.
CONFIGURE_OPTS
Options that are passed to configure when building a Ruby.
MAKE_OPTS
Options that are passed to make when building a Ruby.
MAKEOPTS
Used instead of MAKE_OPTS when MAKE_OPTS is not defined.
TMPDIR Sets the location where ruby-build stores temporary files.
RUBY_BUILD_BUILD_PATH
Sets the location in which sources are downloaded and built.
AUTHORS
ruby-build is developed by Sam Stephenson <sam@37signals.com>.
This man page was written for the Debian GNU/Linux distribution by Sebastian Boehm <sebastian@sometimesfood.org> but may be used by others.
SEE ALSO rbenv(1)
June 2012 RUBY-BUILD(1)