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0 votes
1 answer
136 views

On simple filenames as commands versus arguments

I am reading Sobell's A Practical Guide to Linux Commands, Editors, and Shell Programming, 4e, and I am currently starting Chapter 5 on the basics of shells. On page 135 Sobell explains that From the ...
EE18's user avatar
  • 253
20 votes
1 answer
6k views

Using mv command to move a file from one folder to another one - Strange example

I'm learning unix commands from a UNIX Tutorial for Beginners at surrey.ac.uk where I found a weird way to move a file. In particular, I have the folder unixstuff in the home directory, inside the ...
Gennaro Arguzzi's user avatar
2 votes
1 answer
507 views

Consolidate several GraphicsMagick (ImageMagick) commands into one

There are many times I get single page PDFs that I want to convert to JPEGs and crop the excess whitespace off of. Here is the current set of commands I have which accomplishes what I want: gm ...
DanielTA's user avatar
  • 145
-1 votes
1 answer
240 views

Why would calling cd (builtin) from cd (shell function) without "command" cause an endless loop?

I once read in a Bash book by O'Reilly the following (my summary): command and enable cd () { echo "Improved CD !" # Improvement one; command cd # Improvement two; # Do cool ...
user avatar
0 votes
1 answer
1k views

Commands Grouping

I understand the ampersand & at the end of a command sequence executes it on the background (in "parallel"), the semicolon ; allows for sequential (in "series"), and the parenthesis allows command ...
Brethlosze's user avatar
3 votes
2 answers
220 views

Is the synopsis section of the man page for the find command wrong?

So, I have been trying to get into the habit of first looking at man pages before starting to google when I forget how to run a certain command. I was looking at the man page for the find command ...
timbram's user avatar
  • 151