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Top Forums Shell Programming and Scripting concatenate files sorted by date Post 302203247 by docaia on Saturday 7th of June 2008 10:32:25 AM
Old 06-07-2008
concatenate files sorted by date

I am a beginner in script writing, i tried to do the following
I have a set of files sorted by date in the format YYMMDD.s and .x and .r
I need to concatenate a header file to these sets of files so I used the following code
Code:
echo "enter Swath number"
read s
echo "please enter first date and MMDD press ENTER"
read i
echo "please enter last date and MMDD  press ENTER"
read j
for((i; i <= j; i++))
do
cat NJSC_Alam_Ph1_Blk1_3D_HDR_S /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}.s  > /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}_Final.s

cat NJSC_Alam_Ph1_Blk1_3D_HDR_R /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}.r  > /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}_Final.r

cat NJSC_Alam_Ph1_Blk1_3D_HDR_X /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}.x  > /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}_Final.x

done

I expect it to concatenate the files based on the user input.
I have 2 problems, the first on is that it doesn't do this for example if I enter the value for i and j to be 0530 and 0531 for 30 and 31 of May it searches for a file named 08345 instead of 080530.
the other problem is how can i make the script to work for 2 different months? like I have the first file as 300508 and last file as 050608, the loop is not going o work there
 

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fwtmp(1M)																 fwtmp(1M)

NAME
fwtmp, wtmpfix - manipulate connect accounting records SYNOPSIS
[files] DESCRIPTION
fwtmp reads from the standard input and writes to the standard output, converting binary records of the type found in to formatted ASCII records. The ASCII version is useful to enable editing, via ed(1), bad records or for general purpose maintenance of the file. The argument is used to denote that input is in ASCII form, and output is to be written in binary form. The arguments and are independent, respectively specifying ASCII input and binary output. Therefor, is an ASCII to ASCII copy and is a binary to binary copy. should be used for reading If is not used, structure is read. wtmpfix examines the standard input or named files in format, corrects the time/date stamps to make the entries consistent, and writes to the stan- dard output. A can be used in place of files to indicate the standard input. If time/date corrections are not performed, will fault when it encounters certain date-change records. Each time the date is set, a pair of date change records is written to The first record is the old date denoted by the string old time placed in the line field and the flag placed in the type field of the structure. The second record specifies the new date, and is denoted by the string placed in the line field and the flag placed in the type field. uses these records to synchronize all time stamps in the file. nullifies date change records when writing to the standard output by setting the time field of the structure in the old date change record equal to the time field in the new date change record. This prevents and from factoring in a date change record pair more than once. In addition to correcting time/date stamps, wtmpfix checks the validity of the name field to ensure that it consists solely of alphanumeric characters or spaces. If it encounters a name that is considered invalid, it changes the login name to and writes a diagnostic to the standard error. This minimizes the risk that will fail when processing connect accounting records. DIAGNOSTICS
wtmpfix generates the following diagnostics messages: WARNINGS
generates no errors, even on garbage input. FILES
SEE ALSO
ed(1), acct(1M), acctcms(1M), acctcom(1M), acctcon(1M), acctmerg(1M), acctprc(1M), acctsh(1M), runacct(1M), acct(2), acct(4), utmp(4), wtmps(4). STANDARDS CONFORMANCE
fwtmp(1M)
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