Difference between revisions of "Linux"
From PHYSpedia
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;<code>cut</code> | ;<code>cut</code> | ||
: read from stdin and write selected columns to stdout. | : read from stdin and write selected columns to stdout. | ||
| + | : common options: -d, -f | ||
| + | ;<code>column</code> | ||
| + | : read from stdin and write to stdout such that columns are aligned | ||
| + | : common options: -t | ||
Revision as of 19:08, 21 January 2013
These topics have their own pages.
Common C, C++, FORTRAN Libraries
Useful Commands
The following is a (short) list of useful command when manipulating data in text files. Some common options are listed, but may not be explained. For full descriptions of each command, see the man page. stdin, stdout, and stderr refer to standard input, output and error, respectively.
cat [file1 [ file2 [...] ] ]- print text file(s) to stdout. if multiple files are given, their text is concatenated
- useful for starting a pipeline of commands from the contents of a text file
echo [args...]- print arguments to stdout
- useful for starting a pipeline of commands from a variable's value
- useful for printing output to the terminal from inside a script
sort- read from stdin, sort lines, and write to stdout
- command options: -k, -t, -n, -g
cut- read from stdin and write selected columns to stdout.
- common options: -d, -f
column- read from stdin and write to stdout such that columns are aligned
- common options: -t
