bash cp：找不到命令
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cp: command not found
提问by VIJAY GUPTA
I am trying to copy one file to other directory and getting error message while interrupt is called.
我试图将一个文件复制到其他目录并在调用中断时收到错误消息。
The Script :
剧本 ：
#!/bin/bash
PATH=~/MkFile/
exitfn () {
trap SIGINT # Resore signal handling for SIGINT
echo ; echo 'Called ctrl + c ' # Growl at user,
cp ./BKP/temp.txt $PATH/backup.txt
exit # then exit script.
}
trap "exitfn" INT # Set up SIGINT trap to call function.ii
read -p "What? "
echo "You said: $REPLY"
# reset all traps##
trap - 0 SIGINT
Output :
输出 ：
./signal.sh
What? ^C
Called ctrl + c
./signal.sh: line 9: cp: command not found
Do you have idea what is wrong in this script ??
你知道这个脚本有什么问题吗？？
回答by konsolebox
You modified your PATH variable that's why. Perhaps you just want to add another path to it:
您修改了 PATH 变量，这就是原因。也许您只是想为它添加另一条路径：
PATH=$PATH:~/MkFile/
Or if in Bash, simply use the append operator:
或者如果 in Bash，只需使用附加运算符：
PATH+=:~/MkFile/
Come to think of it, I don't think you actually want to use the PATH variable. Just use another parameter name instead:
仔细想想，我不认为你真的想使用 PATH 变量。只需使用另一个参数名称：
DIR=~/MkFile/
And some would recommend just using lowercase letters to avoid conflict with builtin shell variables:
有些人会建议只使用小写字母以避免与内置 shell 变量发生冲突：
path=~/MkFile/
From the manual:
从手册：
PATH A colon-separated list of directories in which the shell looks for commands. A zero-length (null) directory name in the value of PATH indicates the current directory. A null directory name may appear as two adjacent colons, or as an initial or trailing colon.
PATH A colon-separated list of directories in which the shell looks for commands. A zero-length (null) directory name in the value of PATH indicates the current directory. A null directory name may appear as two adjacent colons, or as an initial or trailing colon.
回答by PedroA
In Linux, $PATH is an environmental variable that holds the directories to search for executable files (see for example http://www.linfo.org/path_env_var.html).
在 Linux 中， $PATH 是一个环境变量，用于保存搜索可执行文件的目录（参见例如http://www.linfo.org/path_env_var.html）。
I don't really know if your purpose is to change the PATH variable. If it is you should follow the konsolebox answer, but if not, you should avoid the use of environmental variables as variables in your script. Try using instead:
我真的不知道您的目的是否是更改 PATH 变量。如果是，您应该遵循 konsolebox 的答案，但如果不是，则应避免在脚本中使用环境变量作为变量。尝试使用：
path=~/MkFile/
路径=~/MkFile/
or
或者
MYPATH=~/MkFile/
MYPATH=~/MkFile/
