Sed loop through files

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Related Hot Network Questions. Question feed. What can we do if there are thousands of files to be a loop in a directory. We need a more dynamic way to provide file names. We can use ls command in order to provide file names as a list without typing one by one. Some times we may need to work on specific file extensions. We can specify the file extension we want to loop with for loop.

Files names can be stored in a text file line by line. We can read file names from the specified text file and use in a for loop. In this example, we will read the following text file and loop over lines. Our file name is filenames. Up to now, we have learned the basic syntax of for loop. There is also more formal for loop which is the same as C Programming language. We need to provide start condition, iterate operation and end condition.

In this example, we will use echo command to print from 1 to 5 with this for loop syntax. In some cases, we may need infinite loops. Please help me. Hello, I am new to shell scripting and stuck on renaming files in a folder. I have a large CSV files e. I have been trying to use awk and sed but am a newbie and can't figure out how to get it to work. Any help you could offer would be greatly appreciated - I'm stuck trying to remove the colon and wildcards in RedHat Commands.

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