Tcsh运行命令（如果已运行命令） [英] Tcsh run command if command was run

问题描述

我不太熟悉TCSH

如果<$ c，我想运行 command2 在外壳程序中输入了$ c> command1 ，例如：

I would like run a command2 if a command1 was entered in the shell, something like this:

if command1  then
    echo "Command succeeded"
    command2
else
    echo "Command failed"
fi

我尝试了此代码，但没有用。第二步是读取文件并将command1更改的某些变量打印在文件中（仅对某些变量具有某种历史记录）。

I tried this code but it doesn't work. Step two would be to read and print in a file a part some variable that command1 changed (making a kind of history only for some variables).

推荐答案

您可以使用$？

#!/bin/tcsh

# command below can fail or succeed
command1

if ( $? == 0 ) then
 command2
else
 echo "command1 failed"
endif

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