Removes specified columns from a file, where a column is a single character in a line. Reads from standard input, and writes to standard output. Columns are numbered starting with 1; begin deleting columns at (including) the
start column, and stop at (including) the
stop column. Entering a tab increments the column count to the next multiple of either the
stop column; entering a backspace decrements it by 1.
List all the contents of a directory and remove the permissions, UID and GID, file size, and the date/time information, leaving just the filenames:
ls -la | colrm 1 50