Section 1: user commands and tools
NAME date – print or set the system date and time SYNOPSIS date [,OPTION/]… [,+FORMAT/] date [,-u|–utc|–universal/] [,MMDDhhmm/[[,CC/],YY/][,.ss/]] DESCRIPTION Display the current time in the given FORMAT, or set the system date. Mandatory arguments to long options are mandatory for short options too. -d, –date=,STRING/ display time described by STRING, not ‘now’ –debug annotate the…
NAME cp – copy files and directories SYNOPSIS cp [,OPTION/]… [,-T/] ,SOURCE DEST/ cp [,OPTION/]… ,SOURCE/… ,DIRECTORY/ cp [,OPTION/]… ,-t DIRECTORY SOURCE/… DESCRIPTION Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY. Mandatory arguments to long options are mandatory for short options too. -a, –archive same as -dR –preserve=,all/ –attributes-only don’t copy the file data,…
NAME chmod – change file mode bits SYNOPSIS chmod [,OPTION/]… ,MODE/[,,MODE/]… ,FILE/… chmod [,OPTION/]… ,OCTAL-MODE FILE/… chmod [,OPTION/]… ,–reference=RFILE FILE/… DESCRIPTION This manual page documents the GNU version of chmod. chmod changes the file mode bits of each given file according to mode, which can be either a symbolic representation of changes to make, or…
NAME bash – GNU Bourne-Again SHell SYNOPSIS bash [options] [command_string | file] COPYRIGHT Bash is Copyright (C) 1989-2020 by the Free Software Foundation, Inc. DESCRIPTION Bash is an sh-compatible command language interpreter that executes commands read from the standard input or from a file. Bash also incorporates useful features from the Korn and C shells…
NAME cat – concatenate files and print on the standard output SYNOPSIS cat [,OPTION/]… [,FILE/]… DESCRIPTION Concatenate FILE(s) to standard output. With no FILE, or when FILE is -, read standard input. -A, –show-all equivalent to -vET -b, –number-nonblank number nonempty output lines, overrides -n -e equivalent to -vE -E, –show-ends display $ at end…
NAME grep, egrep, fgrep, rgrep – print lines that match patterns SYNOPSIS grep [OPTION…] PATTERNS [FILE…] grep [OPTION…] -e PATTERNS … [FILE…] grep [OPTION…] -f PATTERN_FILE … [FILE…] DESCRIPTION grep searches for PATTERNS in each FILE. PATTERNS is one or more patterns separated by newline characters, and grep prints each line that matches a pattern….
NAME ls – list directory contents SYNOPSIS ls [,OPTION/]… [,FILE/]… DESCRIPTION List information about the FILEs (the current directory by default). Sort entries alphabetically if none of -cftuvSUX nor –sort is specified. Mandatory arguments to long options are mandatory for short options too. -a, –all do not ignore entries starting with . -A, –almost-all do…