PATH变量重复

命令：

export PATH=$(echo $PATH | tr : "\n"| sort | uniq | tr "\n" 😃

---

Code：

awk -F: '{
sep = ""
for (i = 1; i <= NF; ++i)
if (unique[$i] != 1)
{
ut = out sep $i
sep = ":"
unique[$i] = 1
}
print out
}' < < < $PATH