Difference between revisions of "Bash"

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==Bash Scripting ==
==[[Scripts used on Servers]]==
==[[Useful bash commands]]==
==[[Tmux]]==


=== Create a Script that will resize an image to multiple sizes===
== Useful Command Line Utilities ==
#!/bin/bash
* [[RMLINT | RMLINT - Duplicate Finding cmd Tool]]
echo "what is the filename"
* [[RCLONE | Rclone syncs your files to cloud storage ]]
read fn
* [[NCDU | Ncdu Ncdu is a disk usage analyzer]]
#fn="testimage" // to hard code the image
* [[BTOP]]
* [[NTFY]]
for SIZE in 29 40 50 57 58 60 72 75 76 80 87 100 114 120 144 152 167 180 512 1024
do
    sips -Z $SIZE "${fn}.jpg" --out "${fn}${SIZE}.jpg"
done


===Prompt for Image Name and sizes===
==[[Image Scripts]]==
#!/bin/bash
==[[Script Course]]==
echo "what is the filename"
==[[Centos OS | More Scripting]]==
read fn
==[[Sample Scripts]]==
echo "Enter sizes seprated by space"
==[[File Commands]]==
read sizes
===[[Ubuntu File System Commands]]===
* find, copy, replace, rename
for SIZE in $sizes
==[[AWK Command]]==
do
==[[Text File Commands]]==
    sips -Z $SIZE "${fn}.jpg" --out "${fn}${SIZE}.jpg"
* find and replace text in bulk
done
==[[BSD MAILX]]==
 
==[[Shell Scripting]]==
===Convert All png files in a dir to jpg===
 
for i in *.png;
do sips -s format jpeg -s formatOptions 70 "${i}" --out "${i%png}jpg";
done
 
<pre>
 
Brace Expansion {}, helps with repeated commands
 
touch {apple, banana, chery} // would create three filenames
touch filename_{01..100} // will create 100 filenames
echo {A..Z} // prints A - Z
echo {1..10..3} // prints 1 - 10 step 3
touch {apple,banana,cherry}_{01..100}{w..d}
 
** Std Output
cp -v * /folder 1> success.txt 2> error.txt
 
Grep with awk
grep -i searchTerm filename.txt | awk {'print $12'} // will output the 12th thing on a line space delimited and only return that value
 
** Variables
Bash file
#!/bin/bash
a=hello
b="Good Morinng"
c=16
echo "$b I have $c apples."
 
output [Good Morning I have 16 Apples]
 
** Get Info from users
Bash file
#!/bin/bash
echo "Enter your name"
read name
echo "What is your password"
read pass
read -p "what is your fav animal " animal
echo name: $name, pass: $pass, animal: $animal // this is an inline prompt
</pre>
----
[[#Bash Scripting|Back To Top]]-[[Main_Page| Home]]

Latest revision as of 13:22, 15 June 2023

Scripts used on Servers

Useful bash commands

Tmux

Useful Command Line Utilities

Image Scripts

Script Course

More Scripting

Sample Scripts

File Commands

Ubuntu File System Commands

  • find, copy, replace, rename

AWK Command

Text File Commands

  • find and replace text in bulk

BSD MAILX

Shell Scripting

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