10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Very new to the Korn Shell, but I've been looking up loops online and it seems this should work. I'm just trying to convert an ip range in variables $A and $B and iterate the individual ip's out to new lines. Unfortunately I get {152..155} instead of 152, 153, 154, and 155.
# for i in {$A..$B};... (8 Replies)
Discussion started by: Azrael
8 Replies
2. Shell Programming and Scripting
Here's my code:
awk -F '' 'NR==FNR {
if (/time/ && $5>10)
A=$2" "$3":"$4":"($5-01)
else if (/time/ && $5<01)
A=$2" "$3":"$4-01":"(59-$5)
else if (/time/ && $5<=10)
A=$2" "$3":"$4":0"($5-01)
else if (/close/) {
B=0
n1=n2;
... (2 Replies)
Discussion started by: klane
2 Replies
3. AIX
I have a script that loops through a list of users to list files owned by these users
for u is `cat users.list`
do
echo $u >> result.out
find /home -user $u >> result.out
find /var -user $u >> result.out
find /opt -user $u >> result.out
find /usr -user $u >> result.out
done
an so... (3 Replies)
Discussion started by: Dardeer
3 Replies
4. Shell Programming and Scripting
#!/bin/bashi
function userrecord() {
read -p "please enter a number: " a
clear
output=$(grep -w "$a" appraisalrecord)
b=$(echo $a | tr -dc )
if ]; then
echo -e "accepted\n"
else
echo -e "The input must be a numerical number\n"
userrecord
fi
if ]; then
echo -e "the ID has... (2 Replies)
Discussion started by: bassmasta1
2 Replies
5. UNIX for Dummies Questions & Answers
for i in `seq 1 10 ` ; do
printf $i '\n';
done
gives me this:
1234567891064mbarch ~ $ (output followed by bash prompt) :(
I've tried so many ways to create a newline at the end. Does anyone have any ideas.. Thanks in advance. Sorry (7 Replies)
Discussion started by: 64mb
7 Replies
6. Shell Programming and Scripting
good afternoon forums.
i have a problem that ive been trying to work out all morning and cant seem to get my head around it.
what i have in my script is individual letters saved in different variables. so if the word unix was saved then 'u' would be stored in the variable 'wvar1' 'n' in 'wvar2'... (7 Replies)
Discussion started by: strasner
7 Replies
7. Shell Programming and Scripting
I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends.
As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Discussion started by: DeCoTwc
2 Replies
8. Shell Programming and Scripting
Hi guys,
I'm trying to loop through a number of files that is set by whatever is in a field.
eg.
The idea is to split FILELIST down into fields, it could contain 1 - 999 fields and it's bar delimited.
I thought simple, count the number of fields in the field and then loop... (1 Reply)
Discussion started by: Peejay
1 Replies
9. Shell Programming and Scripting
I have a problem validating my script. The start of my script begins like this:
then after this i have all of my script and functions.
at the end i close the loop with this code:
What i want to know is, how do i make the loop so that only Yes or no can be an answer?
and if... (7 Replies)
Discussion started by: amatuer_lee_3
7 Replies
10. Shell Programming and Scripting
Hi there,
I have written a script to clear out log files from the var/tmp dir. It works up to a point. What I needed to do was to exit the script if there was no files to be deleted. I can get this working on a test script but when I implement it into my program it errors out with a `then` not... (3 Replies)
Discussion started by: lodey
3 Replies
TAIL(1) BSD General Commands Manual TAIL(1)
NAME
tail -- display the last part of a file
SYNOPSIS
tail [-F | -f | -r] [-b number | -c number | -n number] [file ...]
DESCRIPTION
The tail utility displays the contents of file or, by default, its standard input, to the standard output.
The display begins at a byte, line or 512-byte block location in the input. Numbers having a leading plus (``+'') sign are relative to the
beginning of the input, for example, ``-c +2'' starts the display at the second byte of the input. Numbers having a leading minus (``-'')
sign or no explicit sign are relative to the end of the input, for example, ``-n 2'' displays the last two lines of the input. The default
starting location is ``-n 10'', or the last 10 lines of the input.
The options are as follows:
-b number
The location is number 512-byte blocks.
-c number
The location is number bytes.
-f The -f option causes tail to not stop when end of file is reached, but rather to wait for additional data to be appended to the
input. The -f option is ignored if the standard input is a pipe, but not if it is a FIFO.
-F The -F option implies the -f option, but tail will also check to see if the file being followed has been renamed or rotated. The
file is closed and reopened when tail detects that the filename being read from has a new inode number. The -F option is ignored if
reading from standard input rather than a file.
-n number
The location is number lines.
-r The -r option causes the input to be displayed in reverse order, by line. Additionally, this option changes the meaning of the -b,
-c and -n options. When the -r option is specified, these options specify the number of bytes, lines or 512-byte blocks to display,
instead of the bytes, lines or blocks from the beginning or end of the input from which to begin the display. The default for the -r
option is to display all of the input.
If more than a single file is specified, each file is preceded by a header consisting of the string ``==> XXX <=='' where ``XXX'' is the name
of the file.
DIAGNOSTICS
The tail utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
cat(1), head(1), sed(1)
STANDARDS
The tail utility is expected to be a superset of the IEEE Std 1003.2-1992 (``POSIX.2'') specification. In particular, the -F, -b and -r
options are extensions to that standard.
The historic command line syntax of tail is supported by this implementation. The only difference between this implementation and historic
versions of tail, once the command line syntax translation has been done, is that the -b, -c and -n options modify the -r option, i.e. ``-r
-c 4'' displays the last 4 characters of the last line of the input, while the historic tail (using the historic syntax ``-4cr'') would
ignore the -c option and display the last 4 lines of the input.
HISTORY
A tail command appeared in PWB UNIX.
BSD
June 6, 1993 BSD