Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Issue with pwd for script run by double click on script (MacOS High SIerra)
Top Forums Shell Programming and Scripting Issue with pwd for script run by double click on script (MacOS High SIerra) Post 303031994 by Don Cragun on Saturday 9th of March 2019 12:02:42 AM
Old 03-09-2019
It should be stable as long as you double-click on a link to invoke your script (as long as you don't change the way you create the link, change any configuration variables that control how links are set, or change the attributes of the link). It should also work if you double-click on the script's name in finder. And, it should also work if you invoke it by giving its name with any absolute or relative pathname to your shell to invoke it, e.g., $PWD/script_name or ./script_name.

If, however, you invoke the script by just using its name (without specifying the directory in which it is located), you could end up with $0 just being script_name if one of the directories included in your $PATH variable is .. If this happens, you can't cd to ${0%/*}. But the following is still likely to work in all cases I can think of with what you're doing:
Code:
#!/bin/bash
[ "$0" != "${0%/*}" ] && cd "${0%/*}"
... ... ...

It might also work with ${BASH_SOURCE[0]}, but that would depend on which version of bash is being used.
Good luck,
Don
This User Gave Thanks to Don Cragun For This Post:
LMHmedchem
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

script for db user pwd

The script to get the db user password from LDAP does not work on AIX 5.3. It's using bash. Our current shell is /usr/bin/shell. How can i make changes to this script so that it can run on aix with current shell with out installing bash. We tried making but din't work. ... (0 Replies)
Discussion started by: noorm
0 Replies

2. Shell Programming and Scripting

script to change shell's pwd

Hi there, i was presented with a challenge that is beyond my current shell knowledge: how can you have a script that executed interactive will change your current working directory? Example (under MacOS): 1. start Terminal and my current working directory is my home folder 2. execute a... (3 Replies)
Discussion started by: gigagigosu
3 Replies

3. Shell Programming and Scripting

what would a script include to find CPU's %system time high and user time high?

Hi , I am trying to :wall: my head while scripting ..I am really new to this stuff , never did it before :( . how to find cpu's system high time and user time high in a script?? thanks , help would be appreciated ! :) (9 Replies)
Discussion started by: sushwey
9 Replies

4. Red Hat

Unable to get $PWD value from script in /etc/init.d

Hi ppl hope to have your advice, i am run out of idea... I have 3 scripts: a.sh, b.sh, and c.sh a.sh resided in /etc/init.d b.sh and c.sh /opt/xSystem I intend to start my system with "service" command which will trigger my a.sh service a.sh start then. a.sh will trigger... (4 Replies)
Discussion started by: cielle
4 Replies

5. Shell Programming and Scripting

getting pwd of script

how can i get the absolute path of whatever directory a script and/or command is in when it is run? i want to know the directory. say for instance, if i were to run the "who" command, i want to know exaclty where the who command is located. if a user ran a script, i want to know where there... (2 Replies)
Discussion started by: SkySmart
2 Replies

6. UNIX for Dummies Questions & Answers

Pwd script

when user types "pwd.sh joe" at command line, it generates pwd as abc123 and when user types "pwd.sh jane" at command line, it generates pwd as abc123. pwd will change every 90 days. my pwd file will be always abc123 until i change joe/jane/bob pwd manually. (3 Replies)
Discussion started by: lawsongeek
3 Replies

7. UNIX for Beginners Questions & Answers

Capture power button press on MacOs High Sierra?

Hello everyone! I'm developing a MacOs Application in python and I'm having some issues trying to find information related to the power button pressed event. I know that in Ubuntu 14.04 you can find information about it on the acpi folders, but I realized that here in Mac that process is... (0 Replies)
Discussion started by: xedge
0 Replies

8. OS X (Apple)

If you run macOS High Sierra version 10.13.1, be sure to install today's update.

Some hackers found a security hole in macOS High Sierra and tweeted it to the world before telling Apple about the problem. You can see the details from PC Magazine's daily news here: Apple Releases Fix for MacOS High Sierra 'Root' Bug. The original story this morning was published before a patch... (6 Replies)
Discussion started by: Don Cragun
6 Replies

9. Shell Programming and Scripting

Terminal running bash/rsync script does not close with exit (MacOS High SIerra)

Hello, I am running a bash script to do an rsync back on a computer running MacOS High Sierra. This is the script I am using, #!/bin/bash # main backup location, trailing slash included backup_loc="/Volumes/Archive_Volume/00_macos_backup/" # generic backup function function backup {... (12 Replies)
Discussion started by: LMHmedchem
12 Replies

10. Shell Programming and Scripting

Issue with shutdown command in script (MacOS High Sierra)

Hello, I have a backup script that runs an rsync backup to an external drive. I use the script frequently on Windows and Linux and have installed it on a Mac. The script has an option to run shutdown after the backup has completed. Since backup can take hours to run, this is an option that is... (10 Replies)
Discussion started by: LMHmedchem
10 Replies

LEARN ABOUT OPENSOLARIS

unlink

link(1M)						  System Administration Commands						  link(1M)

NAME

       link, unlink - link and unlink files and directories

SYNOPSIS

       /usr/sbin/link  existing-file new-file

       /usr/xpg4/bin/link  existing-file new-file

       /usr/sbin/unlink file

DESCRIPTION

       The link and unlink commands link and unlink files and directories. Only super-users can use these commands on directories.

       Use  link  to  create  a new file that points to an existing file. The  existing-file and  new-file operands  specify the existing file and
       newly-created files.  See OPERANDS.

       link and  unlink directly invoke the link(2) and unlink(2) system calls, performing exactly what they are told to  do  and  abandoning  all
       error checking. This differs from the  ln(1) command. See  ln(1).

       While linked files and directories can be removed using unlink, it is safer to use rm(1) and rmdir(1) instead. See  rm(1) and  rmdir(1).

   /usr/xpg4/bin/link
       If  the	existing  file being hard linked is itself a symbolic link, then the newly created file (new-file) will be a hard link to the file
       referenced by the symbolic link, not to the symbolic link object itself (existing-file).

OPERANDS

       The following operands are supported:

       existing-file	Specifies the name of the existing file to be linked.

       file		Specifies the name of the file to be unlinked.

       new-file 	Specifies the name of newly created (linked) file.

ENVIRONMENT VARIABLES

       See  environ(5) for descriptions of the following environment variables that affect the execution of  link: LANG, LC_ALL, LC_CTYPE, LC_MES-
       SAGES, and NLSPATH.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

   /usr/xpg4/bin/link
       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWxcu4			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ln(1), rm(1), link(2), unlink(2), attributes(5), environ(5), standards(5)

SunOS 5.11							    9 Oct 2002								  link(1M)
All times are GMT -4. The time now is 06:24 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy