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A common verb usage is the phrase "You can't grep dead trees"—meaning one can more easily search through digital media, using tools such as grep, than one could with a hard copy (i.e. one made from "dead trees", which in this context is a dysphemism for paper). [29]
Changes the permissions of a file or directory cp: Copies a file or directory dd: Copies and converts a file df: Shows disk free space on file systems dir: Is exactly like "ls -C -b". (Files are by default listed in columns and sorted vertically.) dircolors: Set up color for ls: install: Copies files and set attributes ln: Creates a link to a ...
The possible search criteria include a pattern to match against the filename or a time range to match against the modification time or access time of the file. By default, find returns a list of all files below the current working directory, although users can limit the search to any desired maximum number of levels under the starting directory.
file: Filesystem Mandatory Determine file type Version 4 AT&T UNIX find: Filesystem Mandatory Find files Version 1 AT&T UNIX fold: Text processing Mandatory Filter for folding lines 1BSD fuser: Process management Optional (XSI) List process IDs of all processes that have one or more files open System V gencat: Misc Mandatory
Because these attributes are presented as files and symbolic links, standard utilities work on them, and one can, say, inspect the identity of the process with grep Uid /proc/1392400/status, go to the same directory as a process is in with cd /proc/1392400/cwd, look what files a process has open with ls -l /proc/1392400/fd, then open a file ...
Backward Search like / & text grep like filter n: Next Search Match N: Previous Search Match Esc u: Turn off Match Highlighting (see -g command line option) - c Toggle option c , e.g., -i toggles option to match case in searches m c Set Mark c ' c Go to Mark c = or Ctrl+G: File information : n: Next file : p: Previous file h: Help.
for all files in use by the process, including the executing text file and the shared libraries it is using: the file descriptor number of the file, if applicable; the file's access mode; the file's lock status; the file's device numbers; the file's inode number; the file's size or offset; the name of the file system containing the file;
apropos — search the man page files (command names and their descriptions). find — find files; searches one or more directory trees of a file system, locates files based on some user-specified criteria and applies a user-specified action on each matched file. grep — search plain-text files for lines that match a regular expression.