By Mendel Cooper
This can be the whole reference at the Borne back shell (bash). quantity 1Volume 2 comprises all appendices.
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Additional info for Advanced Bash-Scripting Guide
It may be used to move multiple files to a directory, or even to rename a directory. For some examples of using mv in a script, see Example 9-15 and Example A-3. html (2 of 4) [7/15/2002 6:33:51 PM] Basic Commands When used in a non-interactive script, mv takes the -f (force) option to bypass user input. When a directory is moved to a preexisting directory, it becomes a subdirectory of the destination directory. bash$ mv source_directory target_directory bash$ ls -lF target_directory total 1 drwxrwxr-x 2 bozo bozo 1024 May 28 19:20 source_directory/ rm Delete (remove) a file or files.
Chmod Changes the attributes of an existing file (see Example 11-9). chmod +x filename # Makes "filename" executable for all users. chmod u+s filename # Sets "suid" bit on "filename" permissions. # An ordinary user may execute "filename" with same privileges as the file's owner. ) chmod 644 filename # Makes "filename" readable/writable to owner, readable to # others # (octal mode). chmod 1777 directory-name # Gives everyone read, write, and execute permission in directory, # however also sets the "sticky bit".
It also attempts to replace whitespace with equivalent tabs. The chief use of col is in filtering the output from certain text processing utilities, such as groff and tbl. column Column formatter. This filter transforms list-type text output into a "pretty-printed" table by inserting tabs at appropriate places. Example 12-20. /bin/bash # This is a slight modification of the example file in the "column" man page. (printf "PERMISSIONS LINKS OWNER GROUP SIZE MONTH DAY HH:MM PROG-NAME\n" \ ; ls -l | sed 1d) | column -t # The "sed 1d" in the pipe deletes the first line of output, #+ which would be "total N", #+ where "N" is the total number of files found by "ls -l".