Sponsored Content
Top Forums UNIX for Dummies Questions & Answers BASH: Change alias to script to add a task Post 302488590 by SilversleevesX on Monday 17th of January 2011 09:53:32 PM
Old 01-17-2011
BASH: Change alias to script to add a task

Hi.

I use an alias, "homeperm" as shorthand for curl -o. Since most of what I download via cUrl is graphic image files -- jpeg files -- I'd like to be able to change this alias to a script, or use it to invoke a function, which will not only download the file but date-stamp it using Exiv2 in either (or both) the IPTC or EXIF annotation "blocks". This would save me the hassle of going back and manually entering this information after reading the mod date for file X or Y in my file manager.

if anyone is familiar with the "curl -o" command, and I suppose not a few people are, then you know that its syntax is [command][your-file-name][source-URL]. Where I'm drawing a blank in turning this alias into something fancier is: I'm not sure, having neither seen it done nor done it myself in the past, how to write a script or function that will follow this same syntax.

I've done some simple scripts that prompt for input using the echo and read commands, but what I'm looking for is a way to enter the [your-file-name] and [source-URL] parts on the same line with the "homeperm," which is how the alias works and is very much what I've grown accustomed to.

Is it possible in BASH to get the second and third parts of a string from stdin passed, just as a f'r'instance, as variable values that can be handled by a function or script like this? If so, how would one go about it?

Or is it necessary to already have a subshell running before such a thing could be done?

I'm sorry I can't offer any "crappy candidate code" to show what I mean, but if anyone needs part or all of this idea explained any more clearly, then please ask: I'll do my best.

Hoping someone can help me with this.

BZT
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Query regarding alias and setting bash as a default script

Hi All, I am setting bash as my working shell in my .profile file. So I have written a line : bash as the list line in my .profile I want to use alias as follows: alias me='who am i' When i log in, as expeced I enter the bash shell but alias doesn't work. Is it because the alias is defined... (1 Reply)
Discussion started by: VENC22
1 Replies

2. UNIX for Dummies Questions & Answers

Alias, function or script (bash) to "revert" cd command?

In all of my brief and superficial experience with Unix or Linux, the one curious and consistent thing has been that 'cd ./' (back up one directory level) has done absolutely nothing in any of them. Now I understand that, at least for bash, 'cd ./' appears to have been substituted by 'cd ..' Am... (1 Reply)
Discussion started by: SilversleevesX
1 Replies

3. Shell Programming and Scripting

Idea for an "informative" bash alias or script

I had the idea come into my head that it would be good to have a single command that gave file type, file size, last modification date, and owner/group information, like what one would see in a GUI "Properties" dialog, but all in a terminal window. In my opinion, these statistics about a file... (5 Replies)
Discussion started by: SilversleevesX
5 Replies

4. Shell Programming and Scripting

Unable to change environment variables in bash script

Hello! For the moment some settings in my .bashrc contain the password of my company's firewall, which is not a good idea. I would like to use the string "PASSWORD" set in .bashrc and a script that changes all appearances of "PASSWORD" in the environment variables by the actual password (which... (4 Replies)
Discussion started by: markolopa
4 Replies

5. Shell Programming and Scripting

How to run Cygwin bash from windows scheduled task?

Hmmm.... I love these forums because I always get great prompt responses and I want to ask a question about running bash on windows. Is that allowed? Now I know I can install cygwin cron and run bash that way. Can I run bash from windows schedule task? How? thanks siegfried (1 Reply)
Discussion started by: siegfried
1 Replies

6. Shell Programming and Scripting

How to do one line bash schedule task?

This seems to work: https://www.unix.com/shell-programming-scripting/179705-how-run-cygwin-bash-windows-scheduled-task.html However, I was hoping to avoid writing a 2 line bat files to invoke my cygwin scripts as a scheduled task (since I'm making lots scheduled tasks). I was hoping this would... (1 Reply)
Discussion started by: siegfried
1 Replies

7. Shell Programming and Scripting

Windows Task with Bash script

Hello I have a problem with use bash script in windows task. If I use script by cygwin it's working well. If I use it by Windows task I'm get error Error : ERROR 2 (HY000) at line 2: File '.\xxx.csv' not found (Errcode: 2) Code Line : load data local infile './xxx.csv' REPLACE into... (16 Replies)
Discussion started by: karp
16 Replies

8. Shell Programming and Scripting

Is it possible to change paths inside a bash script?

i have some script with some paths inside it. The idea is to some files which is on desktop copy and move to another location. Problem is that inside script is similar to this: cp test1.zip /root/help/ because I allways have another zip files, does it possible to have some input which ask me... (18 Replies)
Discussion started by: tomislav91
18 Replies

9. Shell Programming and Scripting

Change directory within a bash shell script

Hi, I have been trying to execute the below command by changing directory and then copying contents of one directory to another by doing some file name manipulations in between. However this isnt working since as soon as the statement completes it goes back to the original folder. Can someone... (5 Replies)
Discussion started by: HikingLife
5 Replies
WHICH(1)						      General Commands Manual							  WHICH(1)

NAME
which - shows the full path of (shell) commands. SYNOPSIS
which [options] [--] programname [...] DESCRIPTION
Which takes one or more arguments. For each of its arguments it prints to stdout the full path of the executables that would have been exe- cuted when this argument had been entered at the shell prompt. It does this by searching for an executable or script in the directories listed in the environment variable PATH using the same algorithm as bash(1). This man page is generated from the file which.texinfo. OPTIONS
--all, -a Print all matching executables in PATH, not just the first. --read-alias, -i Read aliases from stdin, reporting matching ones on stdout. This is useful in combination with using an alias for which itself. For example alias which='alias | which -i'. --skip-alias Ignore option `--read-alias', if any. This is useful to explicity search for normal binaries, while using the `--read-alias' option in an alias or function for which. --read-functions Read shell function definitions from stdin, reporting matching ones on stdout. This is useful in combination with using a shell func- tion for which itself. For example: which() { declare -f | which --read-functions $@ } export -f which --skip-functions Ignore option `--read-functions', if any. This is useful to explicity search for normal binaries, while using the `--read-functions' option in an alias or function for which. --skip-dot Skip directories in PATH that start with a dot. --skip-tilde Skip directories in PATH that start with a tilde and executables which reside in the HOME directory. --show-dot If a directory in PATH starts with a dot and a matching executable was found for that path, then print "./programname" rather than the full path. --show-tilde Output a tilde when a directory matches the HOME directory. This option is ignored when which is invoked as root. --tty-only Stop processing options on the right if not on tty. --version,-v,-V Print version information on standard output then exit successfully. --help Print usage information on standard output then exit successfully. RETURN VALUE
Which returns the number of failed arguments, or -1 when no `programname' was given. EXAMPLE
The recommended way to use this utility is by adding an alias (C shell) or shell function (Bourne shell) for which like the following: [ba]sh: which () { (alias; declare -f) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot $@ } export -f which [t]csh: alias which 'alias | /usr/bin/which --tty-only --read-alias --show-dot --show-tilde' This will print the readable ~/ and ./ when starting which from your prompt, while still printing the full path when used from a script: > which q2 ~/bin/q2 > echo `which q2` /home/carlo/bin/q2 BUGS
The HOME directory is determined by looking for the HOME environment variable, which aborts when this variable doesn't exist. Which will consider two equivalent directories to be different when one of them contains a path with a symbolic link. AUTHOR
Carlo Wood <carlo@gnu.org> SEE ALSO
bash(1) WHICH(1)
All times are GMT -4. The time now is 08:51 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy