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cat is not complete.

Hi getgle/get52, when looking at the manual of cat there are a bunch of options that cat provides that your php rewrite of cat does not provide.

       -A, --show-all
              equivalent to -vET
       -b, --number-nonblank
              number nonempty output lines, overrides -n
       -e     equivalent to -vE
       -E, --show-ends
              display $ at end of each line
       -n, --number
              number all output lines
       -s, --squeeze-blank
              suppress repeated empty output lines
       -t     equivalent to -vT
       -T, --show-tabs
              display TAB characters as ^I
       -u     (ignored)
       -v, --show-nonprinting
              use ^ and M- notation, except for LFD and TAB
       --help display this help and exit
       --version
              output version information and exit

I tried to write in cat in python (I don't know how to code in PHP) and made some of these options. A lot of them are useless but the main actually usefule ones I think are being able to see a concatenated version of multiple files and being able to see a line count.
https://codeberg.org/zortazert/Python-Projects/src/branch/main/gnu/pof.py

# POF - Print Out Files 
import sys
import os
args = sys.argv[1:]
special = ["-n", "-b",]

if args == []:
    print("No arguments were given")
    quit()
if "-h" in args:
    print("""Usage:
- python pof.py [FILE]
Print out contents of given file (if they exist)
- python pof.py [FILE] [FILE2] [FILE3]
Print out all given files (if they exist)
- python pof.py -n [FILE]
Print out numbered the lines in the file.
- python pof.py -b [FILE]
Print out numbered only blank lines in the file.
- python pof.py -h
Pring out this help""")
    quit()

num=0
for arg in args:
    if os.path.isfile(arg):
        with open(arg) as f:
            if "-n" in args:
                for line in f.read().splitlines():
                    num = num+1
                    print(num, line)   
            elif "-b" in args:
                for line in f.read().splitlines():
                    if line == "":
                        print(line)
                    else:
                        num = num+1
                        print(num, line)
            else:
                print(f.read())
    elif arg in special:
        pass
    else:
        print(f'Can not find "{arg}"')

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