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Concatenates and prints files on the standard output cksum: Checksums (IEEE Ethernet CRC-32) and count the bytes in a file. Supersedes other *sum utilities with -a option from version 9.0. comm: Compares two sorted files line by line csplit: Splits a file into sections determined by context lines cut: Removes sections from each line of files expand
wc (short for word count) is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. The program reads either standard input or a list of computer files and generates one or more of the following statistics: newline count, word count, and byte count. If a list of files is provided, both individual file and total statistics follow.
The following example shows the first 20 lines of filename: head -n 20 filename. This displays the first 5 lines of all files starting with foo: head -n 5 foo* Most versions [citation needed] allow omitting n and instead directly specifying the number: -5. GNU head allows negative arguments for the -n option, meaning to print all but the last ...
Report or filter out repeated lines in a file Version 3 AT&T UNIX unlink: Filesystem Optional (XSI) Call the unlink function Version 1 AT&T UNIX uucp: Network Optional (UU) System-to-system copy Version 7 AT&T UNIX uudecode: Network Mandatory Decode a binary file 4BSD uuencode: Network Mandatory Encode a binary file 4BSD uustat: Network ...
In computing, cmp is a command-line utility on Unix and Unix-like operating systems that compares two files of any type and writes the results to the standard output. By default, cmp is silent if the files are the same; if they differ, the byte and line number at which the first difference occurred is reported. The command is also available in ...
If the input files contain lines beginning with the separator character, the output columns can become ambiguous. For efficiency, standard implementations of comm expect both input files to be sequenced in the same line collation order, sorted lexically. The sort (Unix) command can be used for this purpose.
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In computing, sort is a standard command line program of Unix and Unix-like operating systems, that prints the lines of its input or concatenation of all files listed in its argument list in sorted order. Sorting is done based on one or more sort keys extracted from each line of input. By default, the entire input is taken as sort key.