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Top Forums Shell Programming and Scripting Renaming a file use another file as a sequence calling a shl Post 302410127 by durden_tyler on Sunday 4th of April 2010 10:59:02 PM
Old 04-04-2010
Quote:
Originally Posted by rechever
... but when I call the shl pain from the main one it does not work
...
How do you know it does not work ?
What's happening that should not happen ?
What's not happening that should happen ?

Code:
$ 
$ # show the content of EFTSQL.dat
$ cat -n EFTSQL.dat
     1  1234
$ 
$ # show the content of inner
$ cat -n inner
     1  file_seq=$( < EFTSQL.dat)
     2  echo $file_seq "file_seq"
     3  file2=eft$(expr $file_seq + 1).dat
     4  echo $file2 "file2"
     5  file3=eftsql$(expr $file_seq + 1).dat
     6  echo $file3 "file3"
$ 
$ # show the content of main
$ cat -n main
     1  echo "Lots and lots of irrelevant code here..."
     2  ./inner
$ 
$ # run main
$ ./main
Lots and lots of irrelevant code here...
1234 file_seq
eft1235.dat file2
eftsql1235.dat file3
$ 
$

tyler_durden
 

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cat(1)							      General Commands Manual							    cat(1)

Name
       cat - concatenate and print data

Syntax
       cat [ -b ] [ -e ] [ -n ] [ -s ] [ -t ] [ -u ] [ -v ] file...

Description
       The  command reads each file in sequence and displays it on the standard output.  Therefore, to display the file on the standard output you
       type:
       cat file
       To concatenate two files and place the result on the third you type:
       cat file1 file2 > file3
       To concatenate two files and append them to a third you type:
       cat file1 file2 >> file3
       If no input file is given, or if a minus sign (-) is encountered as an argument, reads from the standard input file.  Output is buffered in
       1024-byte blocks unless the standard output is a terminal, in which case it is line buffered.  The utility supports the processing of 8-bit
       characters.

Options
       -b   Ignores blank lines and precedes each output line with its line number.

       -e   Displays a dollar sign ($) at the end of each output line.

       -n   Precedes all output lines (including blank lines) with line numbers.

       -s   Squeezes adjacent blank lines from output and single spaces output.

       -t   Displays non-printing characters (including tabs) in output.  In addition to those representations used with the -v  option,  all  tab
	    characters are displayed as ^I.

       -u   Unbuffers output.

       -v   Displays  non-printing  characters (excluding tabs and newline) as the ^x.	If the character is in the range octal 0177 to octal 0241,
	    it is displayed as M-x. The delete character (octal 0177) displays as ^?.  For example, is displayed as ^X.

See Also
       cp(1), ex(1), more(1), pr(1), tail(1)

																	    cat(1)
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