Based on error message "command not found: ant", seem to path is not properly set in environment variables.
After installing ant, move it to /usr/local/ using this command mv /Users/admin/Downloads/apache-ant-1.9.4 /usr/local/
Now try to set environment variables using nano $HOME/.profile
Check below lines.
export PATH=$PATH:/usr/local/ant/bin/
export ANT_HOME=/usr/local/ant
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0._71..jdk/Contents/Home/bin
Load variables by executing source $HOME/.profile
and run ant -version
.
Check Apache Ant installation on Mac OS here (1), (2) and similar issue details.
Thanks