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![Linux Shell script to close/open ports on a firewall/Iptables]()
code.linuxnix.comThis is a small script which will takecare of blocking and unblocking ports by asking user about his desire. Just copy this code to your system and change permissions and ... iptables -A INPUT -m tcp -p tcp –dport “$PORT1″ -j ACCEPT && { service iptables瀏覽：1069 -
![Working with Arrays in Linux Shell Scripting – Part 8]()
www.tecmint.comHere as we are concerned about shell scripting, this article will help you in playing around with some shell scripts which make use of this concept of arrays. Array Initialization and Usage With newer versions of bash, it supports one-dimensional arrays.瀏覽：340
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日期：2025-12-09
Learn how you can use variables and parameters in Korn shell to store values. You will also see how the Korn shell supports data types and arrays. ... Array Variable Expansion Array variables are expanded in the same manner as normal variables and paramet...
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日期：2025-12-10
Find Out Raid Health In Linux - Explains how to check the health of your Adaptec RAID array under any Linux distribution form a shell prompt. ... What Dilip is asking is how to check the RAID rebuilding progress, specially the percentage. I don’t see anyw...
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日期：2025-12-09
Example9: Printing characters from 3rd to 7th char. The below code will print VAR1 value from 3rd position till 5 chars from that position, so up to 7th. echo ${VAR1:2:5} Output: cxyza Example10: Print last 4 characters of a string. This will print last 4...
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日期：2025-12-13
27 Mar 2008 ... Explains how to find out number of elements in a bash shell array (length of array
)....
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日期：2025-12-11
$$ a=(1 2 3 4) $$ echo ${#a[@]} 4 ... Assuming bash: ~> declare -a foo ~> foo[0]=
"foo" ~> foo[1]="bar" ......
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日期：2025-12-08
Split the string up into an array and use that instead: str="firsturl.com/123416
secondurl.com/634214" array=( ......
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日期：2025-12-12
In your: if [ "${#selected_columns}" -eq "${number_of_columns}" ]; then echo "
They are equal!" fi....
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日期：2025-12-11
Beware of using the number of elements in an array as the index of the last
element since Bash ......
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