问

如何在Bash脚本中读取多行输入？

手机用户2602918007 发布于 2023-02-06 17:18

文件

shell

key

mpx

我希望存储在一个文件和一个变量倍数行中,从"粘贴"通过shellscript.

我该怎么做呢？

例:

echo "Paste the  certificate key:" 

1fv765J85HBPbPym059qseLx2n5MH4NPKFhgtuFCeU2ep6B19chh4RY7ZmpXIvXrS7348y0NdwiYT61
1RkW75vBjGiNZH4Y9HxXfQ2VShKS70znTLxlRPfn3I7zvNZW3m3zQ1NzG62Gj1xrdPD7M2rdE2AcOr3
Pud2ij43br4K3729gbG4n19Ygx5NGI0212eHN154RuC4MtS4qmRphb2O9FJgzK8IcFW0sTn71niwLyi
JOqBQmA5KtbjV34vp3lVBKCZp0PVJ4Zcy7fd5R1Fziseux4ncio32loIne1a7MPVqyIuJ8yv5IJ6s5P
485YQX0ll7hUgqepiz9ejIupjZb1003B7NboGJMga2Rllu19JC0pn4OmrnxfN025RMU6Qkv54v2fqfg
UmtbXV2mb4IuoBo113IgUg0bh8n2bhZ768Iiw2WMaemgGR6XcQWi0T6Fvg0MkiYELW2ia1oCO83sK06
2X05sU4Lv9XeV7BaOtC8Y5W7vgqxu69uwsFALripdZS7C8zX1WF6XvFGn4iFF1e5K560nooInX514jb
0SI6B1m771vqoDA73u1ZjbY7SsnS07eLxp96GrHDD7573lbJXJa4Uz3t0LW2dCWNy6H3YmojVXQVYA1
v3TPxyeJD071S20SBh4xoCCRH4PhqAWBijM9oXyhdZ6MM0t2JWegRo1iNJN5p0IhZDmLttr1SCHBvP1
kM3HbgpOjlQLU8B0JjkY8q1c9NLSbGynKTbf9Meh95QU8rIAB4mDH80zUIEG2qadxQ0191686FHn9Pi

读取并存储文件说/ tmp/$ keyfile读取它并将其存储在变量$ keyvariable中

1 个回答

你只需要决定阅读多少.

如果这是唯一的输入,您可以阅读直到文件结尾.这是大多数UNIX实用程序的工作方式:
```
#!/bin/bash
echo "Pipe in certificate, or paste and it ctrl-d when done"
keyvariable=$(cat)
```
如果您希望稍后在脚本中继续阅读,则可以阅读,直至看到空白行:
```
#!/bin/bash
echo "Paste certificate and end with a blank line:"
keyvariable=$(sed '/^$/q')
```
如果你想让它感觉更像是交互式魔术,你可以阅读,直到脚本没有输入两秒钟:
```
#!/bin/bash
echo "Paste your certificate:"
IFS= read -d '' -n 1 keyvariable   
while IFS= read -d '' -n 1 -t 2 c
do
    keyvariable+=$c
done
echo "Thanks!" 
```
2023-02-06 17:21 回答

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