×ü?á??×??üó?μ?μ?linuxD????é

1.

ê1ó?sed2?è???DD·?

]#sed 's/\(.\){n\}/\n/g' file

???D′óà¨o?à?μ?n±íê??úμún??×?·?oó2?è???DD·?

2.

?úvi??2é?′windows???t?á3???windows??DD·?^M . ê1ó?vi×?′?ì???1|?ü?′?éé?3y

°′ò???esc

ê?è?

:%s/^M//g

???D^Mê?°′ctrl+v￡?ctrl+mê?è?3?à′μ??￡

3.

bash±è???D

-ne 2?μè?￠-eq μèóú?￠-le D?óúμèóú?￠-lt D?óú?￠-ge ′óóúμèóú?￠-gt ′óóú￡o?aD???ê?ó?óúêy×?′óD?±è??

??

==?￠￡?=￡o?aD?2?ê?ó?óú×?·?′?±è???￡

4.

?úawk?Dòyó?shell±?á?

?òè??a×?o?μ?°ì·¨ê?

]#from_shell="hi awk"

]#awk '{print '"$from_shell“‘}'

?a?ù2?ò×3????????êìa?￡

5.

?ú??±??D?ò????μ?·?￡?óDê±oòDèòa°??3D??üá?μ??á1??3??±?á??μ

?éê1ó?`` ?ò??ê1ó?$()

è?

#!/bin/bash

for i in `seq 1 5`

do

       echo $i

done

?ò??

#!/bin/bash

for i in $(seq 1 5)

do

       echo $i

done

6.

]#sed -n '/keyword/{N;p}'

?éê?3?1??ü×?μ???ò?DD

]#grep -A 2 keyword

?éê?3?1??ü×?μ???á?DD

7.

D′???òμ￥°?±?μ??ˉèo·t???÷1üàí

′???±??ú?¨á￠D?è?1??μoó???y3￡??DD

#!/bin/bash

########

#c-ssh.sh

#]#./c-ssh.sh root server-list.txt "ls -l /home"

########

if [ $# -ne 3 ]

then

        echo "Usage: $0 <user> <Machine_List> <Commond_List>"

        exit 1

fi

for server_list in $(cat $2)

do

        ssh $1@$server_list $3

done