04-23-2006
awk problem broken pipe
Hello everyone
I got a school project that was due yesterday so i really would aprreciate some help
the following is an example of the input file (bateriaTestes)
1 caeiro 2000 d
2 pessoa 100 w
3 campos 200 b
4 soares 500 w
simple 4 field lines. lines separated by \n and fields by white space
using the following i print the content of the file to screen no prob here
i assume from testing awk it is reading a line at a time from bateriaTestes
awk -F"\n" '{ printf( "Client %s \n", $1) }' bateriaTestes
-->>Outputs exactly each line preceded from Client ok!
awk -F"\n" '{ printf( "Client %s \n", $1) > "outFile" }' bateriaTestes
-->>Dows the same and writes to file outFile ok
after this i use
trying to send a line at a time as Input to java
awk -F"\n" '{ printf( "Client %s \n", $1) | "java" }' bateriaTestes
-->>First problem the shell only prints out java usage as if it hadnīt received any arguments. Question: is java receivingl anythin from the left side of the pipe at all??suposse not!! and why may i ask????
awk -F"\n" '{ printf( "Client %s \n", $1) > "java" }' bateriaTestes
-->>i tried this and nothin happened not even any java output
-->>And a final question
I have several shells simultaneously executing the above command
how would i use a semaphor on a file or pipe so all shells executing the script
could write to that place
HELP ME PLEASE ITS URGENT
many thankx in advance
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LEARN ABOUT DEBIAN
git-check-attr
GIT-CHECK-ATTR(1) Git Manual GIT-CHECK-ATTR(1)
NAME
git-check-attr - Display gitattributes information
SYNOPSIS
git check-attr [-a | --all | attr...] [--] pathname...
git check-attr --stdin [-z] [-a | --all | attr...] < <list-of-paths>
DESCRIPTION
For every pathname, this command will list if each attribute is unspecified, set, or unset as a gitattribute on that pathname.
OPTIONS
-a, --all
List all attributes that are associated with the specified paths. If this option is used, then unspecified attributes will not be
included in the output.
--cached
Consider .gitattributes in the index only, ignoring the working tree.
--stdin
Read file names from stdin instead of from the command-line.
-z
Only meaningful with --stdin; paths are separated with a NUL character instead of a linefeed character.
--
Interpret all preceding arguments as attributes and all following arguments as path names.
If none of --stdin, --all, or -- is used, the first argument will be treated as an attribute and the rest of the arguments as pathnames.
OUTPUT
The output is of the form: <path> COLON SP <attribute> COLON SP <info> LF
<path> is the path of a file being queried, <attribute> is an attribute being queried and <info> can be either:
unspecified
when the attribute is not defined for the path.
unset
when the attribute is defined as false.
set
when the attribute is defined as true.
<value>
when a value has been assigned to the attribute.
EXAMPLES
In the examples, the following .gitattributes file is used:
*.java diff=java -crlf myAttr
NoMyAttr.java !myAttr
README caveat=unspecified
o Listing a single attribute:
$ git check-attr diff org/example/MyClass.java
org/example/MyClass.java: diff: java
o Listing multiple attributes for a file:
$ git check-attr crlf diff myAttr -- org/example/MyClass.java
org/example/MyClass.java: crlf: unset
org/example/MyClass.java: diff: java
org/example/MyClass.java: myAttr: set
o Listing all attributes for a file:
$ git check-attr --all -- org/example/MyClass.java
org/example/MyClass.java: diff: java
org/example/MyClass.java: myAttr: set
o Listing an attribute for multiple files:
$ git check-attr myAttr -- org/example/MyClass.java org/example/NoMyAttr.java
org/example/MyClass.java: myAttr: set
org/example/NoMyAttr.java: myAttr: unspecified
o Not all values are equally unambiguous:
$ git check-attr caveat README
README: caveat: unspecified
SEE ALSO
gitattributes(5).
GIT
Part of the git(1) suite
Git 1.7.10.4 11/24/2012 GIT-CHECK-ATTR(1)