我试图让PS1在设置环境变量时发生变化
我尝试过这两种方法但没有成功:
PS1_EMOJI=
update_ps1_emoji() {
if [ "$ENV_VAR" != "" ]; then
PS1_EMOJI=
fi
}
PROMPT_COMMAND='update_ps1_emoji'
export PS1="\[\e[0;35m\]$PS1_EMOJI [\W]\$?\[\e[m\e[0;31m\]$\[\e[m\] "
和
ps1_emoji() {
if [ "$ENV_VAR" != "" ]; then
echo -n ""
else
echo -n ""
fi
}
export PS1="\[\e[0;35m\]`ps1_emoji` [\W]\$?\[\e[m\e[0;31m\]$\[\e[m\] "
设置环境变量并重新获取.bashrc会更新提示。
答案 0 :(得分:4)
试试这个:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.samko.controlit"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="16"
android:targetSdkVersion="21" />
<uses-permission
android:name="android.permission.TRANSMIT_IR"
android:required="false" />
<uses-permission
android:name="android.permission.VIBRATE"
android:required="false" />
<!-- <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" /> -->
<uses-feature android:name="android.hardware.consumerir" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="com.android.vending.BILLING" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.USE_CREDENTIALS" />
<permission
android:name="com.samko.controlit.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="com.samko.controlit.permission.C2D_MESSAGE" />
<强>演示
export PS1_EMOJI=1
ps1_emoji() {
echo "checking TEST-var"
if [ -z "$TEST" ]; then
echo "TEST is empty!"
export PS1_EMOJI=2
else
echo "TEST is not empty"
export PS1_EMOJI=1
fi
}
PROMPT_COMMAND='ps1_emoji'
export PS1="\$PS1_EMOJI $"