![]() Everything is fine except when I run the command ls grep '.c' I get no results. It uses one pipe and the input (for now) is static. I tried testing this by running: grep -i <(ls) This does not work, though nothing happens. ls grep in shell written in C Ask Question Asked 7 years, 8 months ago Modified 7 years, 8 months ago Viewed 3k times 0 I am trying to make my own shell in C. A suggestion has been made that I am simply looking for <(ls). It's a lot more reliable than calling grep ASCII on the output of file the-file,Īs ASCII may occur there in the file path or other information extracted from the file. grep -i ls /etc/nataswebpass dictionary.txt Buy I would like to try to solve this exercise not using the semicolon, but perhaps actually use grep that is already there. How to Use the ls Command The basic syntax of the ls command is: ls options directory One of the most simple use of the command is to list all the files and folders in your current working directory. Specifying -U overrules this guesswork, causing all files to be read and passed to the matching mechanism verbatim if the file is a text file with CR/LF pairs at the end of each line. For example, piping a grep statement with ls will allow you to search and filter the directory for specific files. With -b and -mime-encoding, file (at least the implementation from libmagic) outputs only the guessed encoding. If grep decides the file is a text file, it strips the CR characters from the original file contents (to make regular expressions with and work correctly). ![]() This solution will present problems with filenames including newlines, it will not print the first part of the name.Even more if it is a nastier one with the key (.png) before the newline char: in that case you will print that part without png, not erasing only the last part. With zsh: isascii() [[ $(file -b -mime-encoding - < $ here so we can also use that function on a file given as argument, and don't modify $REPLY, just return the decision via the exit status. I like how the care you used to write your answer. ![]()
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