search:shell script test conditions相關網頁資料

- www.itforeveryone.co.uk
  
  UNIX and Linux Shell Script Test Command - IT For Everyone!
  
  test returns true in the following cases: test s s is not a null string test -n string string is nonzero test sting1 = string2 the two strings are equal test sting1 != string2 the two strings are not equal test integer1 -eq integer2 the integers are equal
  
  2026-04-20
  
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- www.comptechdoc.org
  
  Linux Script Test Conditions - The Computer Technology Documentation Project
  
  There is a function provided by bash called test which returns a true or false value depending on the result of the tested expression. ... Linux Script Test Conditions There is a function provided by bash called test which returns a true or false value de
  
  2026-04-23
  
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File test operators

日期：2026-04-22

Advanced Bash-Scripting Guide: Prev, Chapter 7. Tests, Next. 7.2. File test operators. Returns true if... -e. file exists. -a. file exists. This is identical in effect to -e....

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Chapter 7. Conditional statements - "Tille" Garrels

日期：2026-04-19

The TEST-COMMAND list is executed, and if its return status is zero, the ... -o OPTIONNAME ], True if shell option “OPTIONNAME” is enabled. [ -z STRING ], True ......

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An if can test any command, not just conditions enclosed within brackets. .... Therefore, in a Bash script, test does not call the external /usr/bin/test binary, which is part of the sh-utils package. Likewise ......

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bash - how to represent multiple conditions in shell script? - Stack Overflow

日期：2026-04-21

I want to represent multiple condition like this: if [ ( $g -eq 1 -a "$c" = "123" ) -o ( $g -eq 2 -a "$c" = "456" ) ] then echo abc; else echo efg; fi but when I execute the...

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The Beginner’s Guide to Shell Scripting 4: Conditions & If-Then Statements

日期：2026-04-24

We’ve covered enough of the basics in our guide on shell scripting that you should feel comfortable experimenting. In this week’s installment, we’ll be tackling some of the more fun stuff, like conditions and “if-then” statements....

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A MySQL database backup (mysqldump) shell script | alvinalexander.com

日期：2026-04-17

A simple, free MySQL database backup (dump) shell script you can use to make MySQL backups. ... MySQL backups and Linux crontab tutorials On a related note, if you're not familiar with the Linux crontab facility, here are some of my crontab tutorials:...

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