/dev/null Post: 70965

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1. UNIX for Dummies Questions & Answers

>/dev/null

Maybe it's an stupid question but remeber... I'm Junior.. I use command line to run programs, and some of them gives a lot of information when, for example, you open a window or other actions. That's really bad because my terminal gets full of unwanted messages, so I use "bin file & >/dev/null"...

2. UNIX for Advanced & Expert Users

Q1 :/dev/null Q2 -A

Hi, Q1-What does nroff -ms > /dev/null Q2- What does mean -A under STAT column : ps aux |head -20 UTIL PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND root 516 93,0 0,0 12 12 - A 04 nov 3906:51 wait Thank you.

3. Shell Programming and Scripting

> /dev/null

hello all, In many shell scripts i found '> /dev/null' , i am not able to get this, will any one please explain why we are using this. thanks sudha

4. Solaris

What is /dev/tty /dev/null and /dev/console

Hi, Anyone can help My solaris 8 system has the following /dev/null , /dev/tty and /dev/console All permission are lrwxrwxrwx Can this be change to a non-world write ?? any impact ??

5. Shell Programming and Scripting

/dev/null

Hi expert, May I know what is the difference between below cron tab entry ? 0,12 * * * * /abc/myscript.sh > /dev/null 2>&1 0,12 * * * * /abc/myscript.sh

6. Shell Programming and Scripting

/dev/null what is the use of it?

when do you use the path /dev/null

7. UNIX for Dummies Questions & Answers

/dev/null 2>&1 Versus /dev/null 2>1

How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&" echo "hello" > /dev/null 2>&1 echo "hello" > /dev/null 2>1

8. Shell Programming and Scripting

Redirecting standard out to /dev/null goes to file "/dev/null" instead

I apologize if this question has been answered else where or is too elementary. I ran across a KSH script (long unimportant story) that does this: if ; then CAS_SRC_LOG="/var/log/cas_src.log 2>&1" else CAS_SRC_LOG="/dev/null 2>&1" fithen does this: /usr/bin/echo "heartbeat:...

9. Shell Programming and Scripting

Help with /dev/null Please

Hello All and a Happy New year to yous guys. I'm running the below command on my AIX box and it keeps giving me the message that the file doesn't exist. I know the file don't exist, but I don't want to see the error. 2>/dev/null doesn't work. bash-3.00$ ls -l C* | wc -l 2>/dev/null ls:...

10. Shell Programming and Scripting

2>/dev/null

Friends have the following problem a search may not find anything which would correct example: ls -ltr *prueba.txt | nawk '{ print $9 }' > Procesar.dat 2>/dev/null When he finds nothing gives me the following error ls: prueba.txt: No such file or directory because 2> / dev / null...

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elf64_newphdr

elf_getphdr(3E) 														   elf_getphdr(3E)

NAME

       elf32_getphdr,  elf32_newphdr,  elf64_getphdr,  elf64_newphdr  -  retrieve  class-dependent program header table for elf32 and elf64 files,
       respectively

SYNOPSIS

       [flag... ] file...  [library] ...

DESCRIPTION

       For a 32-bit class file, returns a pointer to the program execution header table, if one is available for the ELF descriptor elf.

       allocates a new table with count entries, regardless of whether one existed previously, and sets the bit for the table (see  elf_flag(3E)).
       Specifying  a  zero  count deletes an existing table.  Note this behavior differs from that of (see elf_getehdr(3E)), allowing a program to
       replace or delete the program header table, changing its size if necessary.

       If no program header table exists, the file is not a 32-bit class file, an error occurs, or elf is  null,  both	functions  return  a  null
       pointer.  Additionally, returns a null pointer if count is zero.

       The table is an array of structures, each of which includes the following members.

       The  ELF  header's  member  tells how many entries the program header table has (see elf_getehdr(3E)).  A program may inspect this value to
       determine the size of an existing table; automatically sets the member's value to count.  If the program is building  a	new  file,  it	is
       responsible for creating the file's ELF header before creating the program header table.

       For a 64-bit class file, returns a pointer to the program execution header table, if one is available for the ELF descriptor elf.

       allocates  a  new  table with count entries, regardless of whether one existed previously, and sets the bit for the table (see Specifying a
       zero count deletes an existing table.  Note this behavior differs from that of (see elf_getehdr(3E)), allowing  a  program  to  replace	or
       delete the program header table, changing its size if necessary.

       If  no  program	header	table  exists,	the file is not a 64-bit class file, an error occurs, or elf is null, both functions return a null
       pointer.  Additionally, returns a null pointer if count is zero.

       The table is an array of structures, each of which includes the following members.

       The ELF header's e_phnum member tells how many entries the program header table has (see elf_getehdr(3E)).   A  program	may  inspect  this
       value  to  determine the size of an existing table; automatically sets the member's value to count.  If the program is building a new file,
       it is responsible for creating the file's ELF header before creating the program header table.

SEE ALSO

       elf(3E), elf_begin(3E), elf_flag(3E), elf_getehdr(3E).

																   elf_getphdr(3E)

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1. UNIX for Dummies Questions & Answers

>/dev/null

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2. UNIX for Advanced & Expert Users

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What is /dev/tty /dev/null and /dev/console

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