tion,declareandtypeset makeeachname local,aswiththe local command, unless the -goptionissup‐ plied.Ifa variable nameisfollowedby=value, the valueofthe variableissettovalue.Whenus‐ ing -aor-Aandthe compound assignment syntaxtocreate array variables, additional attributesdonottakeeffectuntilsubsequent...
bash - while with multiply条件会丢失其中之一 、 我将尝试使用2个条件进行循环,x != 0或curl =成功,curl模块工作正常,但脚本丢失[x -eq 0]set -xwhile [[ $x -eq 0 ]] || [[ "$(curl -s -o /dev/null -w ''%{http_code}'' http://nexus_url/bin/bashx=8 while</ 浏览10提问于2021...
if[[ ${x+Z} =Z ]] ## $x被设置thenecho${x+Z}echoZif[[ -n $x ]] ## $x非空thenprintf"\$x = %s\n""$x"elseprintf"\$x is set but empty\n"fielseprintf"%s is not set\n""\$x"fi 若导出了一个变量,其一直保留在环境中,除非直接unset命令。 $ unset x $mvvariable showvar ...
if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then # We have color support; assume it's compliant with Ecma-48 # (ISO/IEC-6429). (Lack of such support is extremely rare, and such # a case would tend to support setf rather than setaf.) color_prompt=yes else color_...
bash内置命令set引起的问题 问题背景 最近在编译yocto工程,设置环境变量时,突然发现oe-init-build-env无法正常工作了,正常情况下BDIR="build",但莫名奇妙生成了一个x的目录,有点懵。 # normaldir$.oe-init-build-env dir/build$# abnormaldir$.oe-init-build-env...
check-if-a-variable-is-set-in-bash YP小站 2021/11/26 9160 聊聊flink的logback配置 大数据bashbash 指令java flink-release-1.7.1/flinkdist/src/main/flink-bin/bin/flink-daemon.sh code4it 2019/02/14 2.4K0 YashanDB Docker镜像 数据库 常规使用 yas 部署数据库的方法,流程复杂,需要配置许多...
On native Windows, thePATHshould already be set up, but the system may use a legacy codepage. Incmd.exe,powershell.exeand Powershell ISE, make sure to use a TrueType font, not a Raster font, and set the active codepage to UTF-8 (65001) withchcp: ...
contains(name, 'Test')].id"-otsv# Returns the subscription id of a non-default subscription containing the substring 'Test'subscriptionId="$(az account list --query "[? contains(name, 'Test')].id"-otsv)# Captures the subscription id as a variable.az account set-s$subscriptionId# Sets...
创建变量variableName=varValue$variableName="varValue"set variableName=varValue 使用变量作为参数值variableName$variableName%variableName% 在--query参数中使用变量'$variableName''$variableName''$variableName' 有多种不同的方法可将变量信息返回到控制台屏幕,但echo在大多数情况下均有效。 对比如下: ...
# Note: The exit status may not be the same as with an if statement [[ $var == hello ]] && echo hi # Multi line (no else) [[ $var == hello ]] && { echo hi # ... } case设置变量的简单语句 在:内置的可以用来避免重复variable=在一个case语句。该$_变量存储的最后一个命令的最后...