shell script if or
If statements (and, closely related, case statements) allow us to make decisions in our Bash scripts. They allow us to decide whether or not to run a piece of code ... ,Yes you can, but using -o for "or" is marked as obsolete in the POSIX standard, as is using -a for "and". New code should not use -o or -a . – It also makes for unreliable code as the [ command is not always able to parse its arguments
| 相關軟體 PuTTY 資訊 | |
|---|---|
 shell script if or 相關參考資料
How to do a logical OR operation in shell scripting - Stack ...
2010年11月6日 — This should work: #!/bin/bash if [ "$#" -eq 0 ] || [ "$#" -gt 1 ] ; then echo "hello" fi. I'm not sure if this is different in other shells but if you w... https://stackoverflow.com If Statements - Bash Scripting Tutorial
If statements (and, closely related, case statements) allow us to make decisions in our Bash scripts. They allow us to decide whether or not to run a piece of code ... https://ryanstutorials.net In a bash script, using the conditional "or" in an "if" statement ...
Yes you can, but using -o for "or" is marked as obsolete in the POSIX standard, as is using -a for "and". New code should not use -o or -a . – It also makes for unreliable code as ... https://unix.stackexchange.com Shell if...elif...fi 語句- Shell - 極客書
if...elif...fi語句是提前一個級彆的控製語句，形式出幾個條件，允許Shell 作出正確的決定。 Syntax: if [ expression 1 ] then Statement ( s ) to be executed if ... http://tw.gitbook.net Shell Script if else 條件判斷式 - Linux 技術手札
2016年12月27日 — Shell Script 的if / else 條件判斷式會用test 或者中括號“[ ]” 表達，以下是Shell Script 的if / else 寫法：. if 寫法：. #!/bin/sh if [ "$1" = "123" ] then ... https://www.opencli.com 【Shell Script】if ... else 條件判斷式| 辛西亞的技能樹
2019年6月14日 — Shell Script 的條件宣告是用[] ，if 條件後面需接then ，block 結束後接fi. https://cynthiachuang.github.i 一起幫忙解決難題，拯救IT 人的一天 - iT 邦幫忙 - iThome
[Shell Script]Day04-if else 判斷式. 快快樂樂學會讓電腦幫我做事系列第4 篇. pajace2001. 7 年前‧ 15558 瀏覽. https://ithelp.ithome.com.tw 鳥哥的Linux 私房菜-- 學習Shell Scripts
跳到 if...then...fi — #!/bin/bash # This program is used to study if then # VBird 2002/06/27 echo "Press y to continue" read yn if [ "$yn" = "y" ]; then echo "script... http://linux.vbird.org 鳥哥的Linux 私房菜-- 第十二章、學習Shell Scripts
2017年3月29日 — 12.3.1 利用test 指令的測試功能; 12.3.2 利用判斷符號[ ]; 12.3.3 Shell script 的預設變數($0, $1...)： shift. 12.4 條件判斷式. 12.4.1 利用if .... then： ... http://linux.vbird.org |