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UNIX for Dummies Questions & Answers
Null Characters
Post 82221 by reborg on Monday 29th of August 2005 08:20:58 PM
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1. Shell Programming and Scripting
I've got a very peculiar situation. I'm trying to find out if we can compare null fields with non-null. I've output csv files from SQL and Oracle. I need to compare each field from the files, and then find out any differences. The files usualy have over 500 fields, and send the resule to DBA.... (8 Replies)
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I'm trying to remove the null characters from a file and copy it to std output.
I'm using emacs and I create the following one line bash file (followed by the error messages):
sed -e 's/^@//' <ConfigItemReplicator.install.log
/usr/bin/bash: -c: line 0: unexpected EOF while looking for... (1 Reply)
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I have an input file having 7 fields delimited by ,
eg :
1,ABC,hg,1,2,34,3
2,hj,YU,2,3,4,
3,JU,kl,4,5,7,
4,JK,KJ,3,56,4,5
The seventh field here in some lines is empty, whereas the other lines there is a value.
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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 (3 Replies)
Discussion started by: glev2005
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6. Shell Programming and Scripting
i need to replace the any special characters with escape characters like below.
test!=123-> test\!\=123
!@#$%^&*()-= to be replaced by
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sed -e "s// /g" old.txt > new.txt
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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
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here's what im trying to do.
i have a file containing lines similar to this:
data.txt:
1hsRmRsbHRiSFZNTTA1dlEyMWFkbU5wUW5CSlIyeDFTVU5SYjJOSFRuWmpia0ZuWXpKV2FHTnRU
1lKUnpWMldrZFZaMG95V25oYQpSelEyWTBka2QyRklhSHBrUjA1b1kwUkJkd3BOVXpWM1lVaG5k... (5 Replies)
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I have this fastq file:
@M04961:22:000000000-B5VGJ:1:1101:9280:7106 1:N:0:86
GGGGGGGGGGGGCATGAAAACATACAAACCGTCTTTCCAGAAATTGTTCCAAGTATCGGCAACAGCTTTATCAATACCATGAAAAATATCAACCACACCA
+test-1
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LEARN ABOUT OPENSOLARIS
quota
quota(1M) System Administration Commands quota(1M) NAME
quota - display a user's ufs file system disk quota and usage SYNOPSIS
quota [-v] [username] DESCRIPTION
quota displays users' UFS disk usage and limits. Only the super-user may use the optional username argument to view the limits of other users. quota without options only display warnings about mounted file systems where usage is over quota. Remotely mounted file systems which do not have quotas turned on are ignored. username can be the numeric UID of a user. OPTIONS
-v Display user's quota on all mounted file systems where quotas exist. USAGE
See largefile(5) for the description of the behavior of quota when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes). FILES
/etc/mnttab list of currently mounted filesystems ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
edquota(1M), quotaon(1M), quotacheck(1M), repquota(1M), rquotad(1M), attributes(5), largefile(5), zones(5) NOTES
quota displays quotas for NFS mounted UFS-based file systems if the rquotad daemon is running. See rquotad(1M). In a zones(5) environment, quota displays quotas only for the zone in which it is invoked. quota can display entries for the same file system multiple times for multiple mount points. For example, # quota -v user1 might display identical quota information for user1 at the mount points /home/user1, /home/user2, and /home/user, if all three mount points are mounted from the same file system with quotas turned on. SunOS 5.11 11 Nov 2008 quota(1M)