[フレーム]
Last Updated: February 25, 2016
·
1.474K
· frank-dspeed

SHELL SCRIPT: Add your Current Directory to PATH Envirment

HOWTO Work with PATH Envirment var in Linux Shell

Little Script to extend PATH var with current dir or a given argument
befor or after the current PATH var

The Script is well documented used nice Shell syntax for comments
Its called Substitution it brings a var in a other Scope ;)
as you see it works nice i hope it will help you to document your scripts better

greetings

#!/bin/bash

########### 
# Author: Frank Lemanschik
# Scriptname: pathadd 
# Version: v1.2
# Last Modifyed: 14.04.2014#04:23 UCT
# URL: 
# Usage: addpath [path] 
# Notes: Replace [path] with /home/bla/project
# if none supplyed current workdir gets used
# returns: 0 if no error and 1 if error 
###########



pathadd() {
## This Looks for the given /home/user like argument 
## else auto use current directory
if [[ -z "1ドル" `# Check if argument is given like "/home/user/project"`]]; then 
 if [ "1ドル" = "after" `# try if argument is "after"`]; then
 "2"="after" `# move after to 2ドル`
 fi
 "1"=$PWD `# use current directory as argument`
fi 

## Makes Save argument is a Directory and then adds it to begin of PATH 
## if after is supplyed it gets added to the end of PATH
## and final shows summary or errors
if [ -d "1ドル" `# Check if directory exists and if it is a directory`]; then 
 if [[ ":$PATH:" != *":1ドル:"* `# check not already set in PATH ?`]]; then
 if [ "2ドル" = "after" `# check if add after`] ; then
 PATH=$PATH:1ドル
 echo "Added: 1ドル after PATH"
 return 0
 else
 PATH=1ドル:$PATH
 echo "Added: 1ドル before PATH"
 return 0
 fi

 else
 echo "INFO: 1ドル Is Already in PATH"
 return 0
 fi
else
 echo "Error: 1ドル Is not a Valid Directory"
 return 1
fi
}

shorter version

if you like it small and none verbose and error handling sounds like greek for you?

 pathadd() {
 if [ -d "1ドル" ] &&[[ ":$PATH:" != *":1ドル:"* ]]; then
 if [ "2ドル" != "after" ] ; then
 PATH=1ドル:$PATH
 else
 PATH=$PATH:1ドル
 fi 
 fi
}

AltStyle によって変換されたページ (->オリジナル) /