Commands by debpolaris

Commands by debpolaris (1)

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Find text in contents with multiple filename

-name : base of filename -o : 'or' '*.c' : avoiding "paths must precede expression" error message -type f : only find file type --color: hightlight specific word with color -E : extended regexp Show Sample Output
This is sample output - yours may be different.
```
./test.c: int Data;
./test.c: int iData;
./test.h: float fnData();
```
0

find ./$(PATH) -name '*.h' -o -name '*.c' -type f | xargs grep --color -E '*Data*'

debpolaris · 2017-02-10 04:17:16 0

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urlencoding with one pure BASH builtin

opposite of https://www.commandlinefu.com/commands/view/10014/urldecoding-with-one-pure-bash-builtin ;-)

Rename files in batch

resize all JPG images in folder and create new images (w/o overwriting)

Convert all jpegs in the current directory into ~1024*768 pixels and ~ 150 KBytes jpegs

Job Control

background and disown, but with a proper one-line syntax

Image to color palette generator

Extract a color palette from a image useful for designers. Example usage: $extract-palette myawesomeimage.jpg 4 Where the first argument is the image you want to extract a palette from. The second argument is the number of colors you want. It may be the case where you want to change the search space. In that case, change the -resize argument to a bigger or smaller result. See the ImageMagick documentation for the -resize argument.

Do some learning...

Just realized how needless the 'ls' has been... This version is also multilingual, since there is no need to grep for a special key word ("nothing"/"nichts"/"rien"/"nada"...). And it makes use of all the available horizontal space.

Generic shell function for modifying files in-place

Some commands (such as sed and perl) have options to support in-place editing of files, but many commands do not. This shell function enables any command to change files in place. See the sample output for many examples. The function uses plain sh syntax and works with any POSIX shell or derivative, including zsh and bash.

Bash autocomplete case insensitive search

Change bash autocomplete case search to insensitive when pressing tab for completion.

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Command to logout all the users in one command

Only to logout all users except root

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