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- Short: Best foreach type command ever
- Author: Thomas.Radtke@rz.uni-osnabrueck.de
- Uploader: Thomas.Radtke@rz.uni-osnabrueck.de
- Type: util/cli
-
- 'from' is a non-standart, AmigaDOS friendly 'foreach' implementation.
- The from command will execute a specified command for every line of a given
- input source (file or stdin). 'from' is freeware (C) Thomas Radtke 1996.
- C Source code included.
-
- Syntax: from <list|-> <command> [args]
- '-' is treated as stdin.
-
- The following _local_ variables will be generated for each line of list:
-
- 0 command name
- i where i=1..n and n is the number of words in the line
- row actual row in the list (Note: first line is 0, not 1)
-
- You can access the variables in the usual way, i.e. $row,$0,$1,..
-
- Examples:
-
- (1) dircmp2 -i -p -c bin: c: | from - delete $1
- Deletes all identical files from directory bin. Hey, don't
- try to automatically remove things, this is only an example, ok ?
- (unless you have a reliable undel program ;)
-
- (2) from mass_output move $1 waste:mass.$row
- moves all files from the mass_output list to waste: as
- mass.0, mass.1,... (this could be temporary files from somewhere)
-
- (3) from mass_output type $1 >>join_them_together
- mass-join operation of files from the list
-
- Although 'from' is superior to 'foreach', it doesn't allow any internal
- filtering of the input lines (e.g. wildcards, refer to -x,-X options in
- dircmp2). I think this is obsolete here, since filtering can be done through
- 'edit' or 'sed' in a better way.
-
- Reference:
-
- dircmp2
- -------
- The dircmp2 command can be found on Aminet as dircmp2a2.lha (also on CD11?).
- An older UN*X version exist in dircmp2.lha.
-
- foreach
- -------
- There is at least one other foreach type command on Aminet, but is is
- buggy and has invalidated my HD.
-
- move
- ----
- The move command can be found in various versions on Aminet
- (imo best bet is move110.lha, also on Set1,CD A)
-
- sed
- ---
- Beside the GNU binutils, you will find 'sed' on Aminet as ixemul-free
- port.
-
- Implementation notes:
- ---------------------
- (i) The binary was compiled from from.c with the Aminet version of
- gcc 2.7.0 and libnix v1.0 static library.
-
- (ii) I am using 'from' successfully on my A4000/EC30/882/2+4/3.0.
- You must have at least the dos library V36 (2.0?) to get this to work.
- You will not enjoy the processing speed with a M68k CPU.
-
- If you like this program, drop me a letter.
-
- Thomas
-
-
- ============================= Archive contents =============================
-
- Original Packed Ratio Date Time Name
- -------- ------- ----- --------- -------- -------------
- 15460 7941 48.6% 02-Apr-96 20:16:38 +from
- 1725 770 55.3% 02-Apr-96 20:16:00 +from.c
- 2350 1254 46.6% 02-Apr-96 20:28:48 +from.readme
- -------- ------- ----- --------- --------
- 19535 9965 48.9% 03-Apr-96 23:56:44 3 files
-