Table of Contents

Bash - How to Use and Configure Bash in Linux


Table of Contents


man bash

$ man bash

   Commands for Moving
       beginning-of-line (C-a)
              Move to the start of the current line.


Check bash Options

$ echo $SHELLOPTS
SHELLOPTS=braceexpand:emacs:hashall:histexpand:history:interactive-comments:monitor


Bash Operation

emacs mode (default)

set -o emacs

Commands for Moving

Operation Commands appendex
Move to the start of the current line. Ctrl + a Ahead
Move to the end of the line. Ctrl + e End
Move back a character. Esc - b Back
Move forward to the end of the next word. Esc - f Forward

Killing and Yanking

Operation Commands appendex
Kill the word behind point, using white space as a word boundary. Ctrl + w
Kill the text from point to the end of the line. Ctrl + k
Kill backward from point to the beginning of the line. Ctrl + u

Window

Operation Commands appendex
Clear the screen leaving the current line at the top of the screen. Ctrl + l
Ctrl + c
Ctrl + s
Ctrl + q

History

Operation Commands appendex
Fetch the previous command from the history list, moving back in the list. Ctrl + p
Fetch the next command from the history list, moving forward in the list. Ctrl + n
Search backward starting at the current line and moving `up' through the history as necessary. Ctrl + r 'Esc' is cansel this operation.


vi mode

set -o vi


Brace expansion {}

$ echo 192.168.0.{100,101}
192.168.0.100 192.168.0.101

$ echo 192.168.0.{100..102}
192.168.0.100 192.168.0.101 192.168.0.102

$ H=`echo 192.168.10.{1..15}`
$ for i in $H ; do echo $i ; done
$ for i in $H ; do host $i ; done

$ cp hoge.txt{,.org}      <- copy and .org

$ mv filename{,.org}      <- add .org
$ mv filename{.org,}      <- delete .org


$ mkdir {dir1,dir2,dir3}
$ ls
dir1/  dir2/  dir3/


$ mkdir dir{1,2,3}
$ ls
dir1/  dir2/  dir3/


$ cp  images/{foo,bar}*.gif  ~/


$ cp  {foo,bar}.jar  ~/

$ for i in `ls -1` ; do echo $i ; done
$ for i in `ls -1` ; do cp $i{,.new} ; done

## From *.org To .new
$ for i in *.org; do cp $i ${i%.org}.new ; done

$ date;for i in 192.168.0.{10,11} 192.168.1.{1..5} ; do ssh $i "uname -n;/sbin/ifconfig | grep add" ; echo  ; done

$ HOGE="abcdef"

$ echo ${HOGE:0:2}
ab

$ echo ${HOGE:2:2}
cd

$ echo ${HOGE:4:2}
ef

$ echo ${HOGE:2}
cdef

$ echo ${HOGE:0:-2}
abcd