Hi
I have flat file with 100 records ,I need to fabricate data into flat file .
ex:
Code:
file.txt
102345 1000 200 300
...............................
..............................
102346 2000 300 4000
In above file the 4th row, 1 st column valu to be increment by 1
and rest of the values are same for 1000 lines.
102347 2000 300 4000
102348 2000 300 4000
Code:
awk 'NR == 4 { $1 = $1 + 1 } { print }' file.txt
If you want more lines than the 4th incremented, change NR == 4. For example, to get the 4th to the end of the file, change it to NR >= 4.
Hi All,
I get a flat file everyday with some records being invalid.Some records come with less number '|'.I just want to add the missing '|'s ,So the it doesnt give an error insufficient fields while loading...There area total of 32 pipes in each record.
Input:
ASADASD |Y|B|SDFGDSDFD| ... (3 Replies)
Hi All,
I need a help with a shelll script program.I get a '|' separated file which sometime has a encrypted column.And this encryption sometime breaks the last column data into a new line and this is not picked by the ETL.So when i run a script,it should append back the broken new line data... (11 Replies)
Howdy everyone, I have need of a scripting brain to help me through the following issue:
*This will help if I explain what I am doing this for and then it may make sense.
I need to change a flat file to prepend a 3 digit code to a certain field in the file going on the value in another scetion of... (2 Replies)
Hi
I have a flat file looking this
QWER 2:35 7044 00001 ROUT 1188 EA SS
ASD 2:36 7044 00010 ROUT
BSD 2:37 7044 00011 ROUT
END
QWER 3:35 7044 00011 ROUT 1088 EA SS
ASD 3:36 7044 00010 ROUT
BSD 3:37 7044 00011 ROUT... (9 Replies)
Hi
I have a file like below . IF the record starts with ASD then change the 20th offset to "K" follwed by that 20th offset value & if the record starts with ASDR then change the 38th offset to "K" followed by 38th offset value . But here the condition is the next value ... (0 Replies)
Before i start doing something, I wanted to know whether the approach to compare XML file with UNIX file system structure. I have a pre-configured file(contains a list of paths to executables) and i need to check against the UNIX directory structure. what are the various approches should i use ? I... (6 Replies)
Hi All,
I have a tab delimited input file with say 4 fields (columns) as below :
0000443 1AGPR061 2006 Daiml
0002198 1B3XG0K2 1989 Chdds
0002199 1Bd64J0L 1990 Ch34s
0002275 1B3s4J0K 1989 Chadys
0002276 1B465302 2002 Dageml
0002290 1B45430K 1989 Cays
I want the 2nd column in file to... (5 Replies)
Need to develop a unix shell script for the below requirement and I need your assistance:
1) search for file.log and file.bad file in a directory and read them
2) pull out "Load_Start_Time", "Data_File_Name", "Error_Type" from log file
4) concatinate each row from bad file as... (3 Replies)
hi
i have written a script for reading a csv file and creating a flat file, suggest if this script can be optimized
#----------------
FILENAME="$1"
SCRIPT=$(basename $0)
#-----------------------------------------//
function usage
{
echo "\nUSAGE: $THIS_SCRIPT file_to_process\n"... (3 Replies)
Hello, I have a large flat file where i need to change data in columns 131-133 based on what is in columns 172-173. I am not sure if I need to read the file line by line and make the change or if I can do this in a single statement. thank you (3 Replies)
Discussion started by: gblmin
3 Replies
LEARN ABOUT MINIX
chmem
CHMEM(1) General Commands Manual CHMEM(1)NAME
chmem - change memory allocation
SYNOPSIS
chmem [+] [-] [=] amount file
EXAMPLES
chmem =50000 a.out # Give a.out 50K of stack space
chmem -4000 a.out # Reduce the stack space by 4000 bytes
chmem +1000 file1 # Increase each stack by 1000 bytes
DESCRIPTION
When a program is loaded into memory, it is allocated enough memory for the text and data+bss segments, plus an area for the stack. Data
segment growth using malloc , brk , or sbrk eats up stack space from the low end. The amount of stack space to allocate is derived from a
field in the executable program's file header. If the combined stack and data segment growth exceeds the stack space allocated, the pro-
gram will be terminated.
It is therefore important to set the amount of stack space carefully. If too little is provided, the program may crash. If too much is
provided, memory will be wasted, and fewer programs will be able to fit in memory and run simultaneously. MINIX does not swap, so that
when memory is full, subsequent attempts to fork will fail. The compiler sets the stack space to the largest possible value (for the Intel
CPUs, 64K - text - data). For many programs, this value is far too large. Nonrecursive programs that do not call brk , sbrk , or malloc ,
and do not have any local arrays usually do not need more than 8K of stack space.
The chmem command changes the value of the header field that determines the stack allocation, and thus indirectly the total memory required
to run the program. The = option sets the stack size to a specific value; the + and - options increment and decrement the current value by
the indicated amount. The old and new stack sizes are printed.
SEE ALSO install(1), brk(2).
CHMEM(1)