Kanrisuru

cat

Output contents of a file in ruby.
linux manual

Basic Usage

require 'kanrisuru'
host = Kanrisuru::Remote::Host.new(host: '127.0.1.1', username: 'ubuntu', keys: ['~/.ssh/id_rsa'])

result = host.cat('/etc/hosts')
result.success?
true

result.to_a
[
  [ 0] "127.0.0.1 localhost",
  [ 1] "127.0.1.1 ubuntu",
  [ 2] "",
  [ 3] .. [16],
  [17] "ff02::1 ip6-allnodes",
  [18] "ff02::2 ip6-allrouters",
  [19] "ff02::3 ip6-allhosts"
]

Parameters

Field Type Description
path string
 		Required file path to get the contents from.
show_tabs boolean
 		Display tab characters
number boolean
 		number all output lines
squeeze_blank boolean
 		suppress repeated empty output lines
show_nonprinting boolean
 		use ^ and M- notation, except for LFD and TAB
show_ends boolean
 		display $ at end of each line
number_nonblank boolean
 		number nonempty output lines
show_all boolean
 		Show all fields including nonprinting, ends, and tabs
mode string
 		Can be either append or write options. Determines how content is saved into a file.
new_file string
 		The name of the newfile to write the content to

Result

Either returns an array of all lines from the file, or a nil value if a file is being written to.

Additional Examples

host.cat(['~/ssl.csr', '~/ssl.ca.bundle'], 
  mode: 'write', 
  new_file: '/var/www/site/ssl/ssl.csr'
)

Exit Status

Code Description
0 Success
1 Failure

Tested On

  • Ubuntu, Debian, Centos, Fedora, Redhat, OpenSuse, SLES
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