#!/bin/bash
count=0
while [ true ]
do
count=$(( $count+1 ))
echo $count
if [ $count -eq 10 ];then
break
fi
sleep 1
done
count=0
while [ true ]
do
count=$(( $count+1 ))
echo $count
if [ $count -eq 10 ];then
break
fi
sleep 1
done
- 4月 22 週二 201410:11
shell - while loop
- 4月 22 週二 201410:09
expect - sftp example
#!/opt/csw/bin/expect
set timeout 20
spawn sftp root@host
expect "*password*"
send "ej03xu35k3au4a83\r"
expect "*sftp*"
send "cd /usr/bin/\r"
expect "*sftp*"
send "put rsync\r"
expect "*sftp*"
send "exit\r"
interact
set timeout 20
spawn sftp root@host
expect "*password*"
send "ej03xu35k3au4a83\r"
expect "*sftp*"
send "cd /usr/bin/\r"
expect "*sftp*"
send "put rsync\r"
expect "*sftp*"
send "exit\r"
interact
- 2月 27 週一 201212:15
Shell - Arithmetic operation
In Shell programming , we should use $(( )) if we want to do arithmetic operation.
for example :
a=10
for example :
a=10
- 2月 27 週一 201211:06
Shell - String concatenation
Sometimes , we may want to concantenate two string into one string.
It is simple in Shell programming , the example is as below:
a=string1_
It is simple in Shell programming , the example is as below:
a=string1_
- 1月 21 週六 201221:09
Shell - Extract substring
This example tells us how to extract sub string from a long string.
while read stringLine
do
while read stringLine
do
- 1月 21 週六 201221:05
Shell - Read file line by line
if we want to read file's content line by line ,
we can use the shell code as below:
while read fileContent
we can use the shell code as below:
while read fileContent
- 12月 29 週四 201100:46
Shell - if then .. else..fi
cv=1
if [ cv -eq 1 ];then
echo '$cv is equal to 1'
else
if [ cv -eq 1 ];then
echo '$cv is equal to 1'
else
- 12月 29 週四 201100:42
Shell - grep , 尋找file中的關鍵字
grep Accuracy inputFile
其中Accuracy表示我們想要從inputFile中尋找的關鍵字 ,
若在inputFile中找到關鍵字的話 ,
其中Accuracy表示我們想要從inputFile中尋找的關鍵字 ,
若在inputFile中找到關鍵字的話 ,
- 12月 28 週三 201123:49
Shell - echo two variables
var1="string1"
var2="string2"
echo "$var1 , $var2"
var2="string2"
echo "$var1 , $var2"
- 12月 28 週三 201123:27
Shell - for loop from 1 to 100
for i in `seq 1 1 100`
do
echo $i
done
do
echo $i
done
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