Replace String In Previous Command Add To End

Modifies the last command to replace a specified string and append a new string.

Terminal

^<string1>^<string2>^<string3>

^<string1>^<string2>^<string3>

#!/bin/bash

# Replace String In Previous Command Add To End
^{{string1}}^{{string2}}^{{string3}}

import subprocess

# Replace String In Previous Command Add To End
# Make sure to replace <placeholders> with actual values
def run_command():
    cmd = [
        "string1-string2-string3",
        
    ]
    
    try:
        print(f"Executing: {' '.join(cmd)}")
        subprocess.run(cmd, check=True)
    except subprocess.CalledProcessError as e:
        print(f"Error: {e}")
    except FileNotFoundError:
        print("Error: string1-string2-string3 not found. Please install it first.")

if __name__ == "__main__":
    run_command()

When To Use

In scenarios where downstream arguments need to be altered while retaining context.

Pro Tip

Use '!!^' to modify the first token only, allowing flexibility in the command structure.

Anatomy of Output

Understanding the result

Updated command: echo 'NewString' Final Command

Shows the result after modification.

NewString Output

Actual output produced by the command.

Success: Command executed Status Message

Indicates successful execution.

Troubleshooting

Common pitfalls

bash: string1: command not found

Solution: Verify the original command syntax.

bash: new argument expected

Solution: Ensure correct formatting: replace with valid arguments.

No previous command found

Solution: Run an initial command before attempting substitution.

Command Breakdown

What each part is doing

^<string1>^<string2>^<string3>: Base Command; The executable that performs this operation. Here it runs String1 String2 String3 before the shell applies any redirect operators.
<string1>: string1; The value supplied for string1.
<string2>: string2; The value supplied for string2.
<string3>: string3; The value supplied for string3.

Alternative Approaches

Comparable commands in other tools

Alternative filesystem tools for the same job.

Lzegrep / Alias Xzgrep Extended Regexp lzegrep --extended-regexp Grep / Use Extended Regexes Case Insensitive grep -Ei "<search_pattern>" <path/to/file> Zapier / Convert Visual Builder Integration zapier convert <integration_id> <path/to/directory> Lzip / Archive File Keep Original lzip -k <path/to/file> Jmtpfs / Set Mount Options For Mtp Device jmtpfs -o <allow_other,auto_unmount> <path/to/directory>