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something like:


awk -F\| '!a[$1]++ { print $1 > "dis_col1.txt"; } !b[$2]++ { print $2 > "dis_col2.txt"; } END { print NR; }' file

Try: openssl s_client -connect myservice.com:443 to do SSL connection.

Previously how? Different CentOS version? This machine is the router?

mute@zbox:~$ type time
time is a shell keyword
mute@zbox:~$ dash
$ type time
time is /usr/bin/time


Look at dash manual. It doesn't provide a time. bash has a built-in time, so it can time...

mute@zbox:~$ sed '/\r$/{N;s/\r\n//}' 4_test.csv
123456
7890AB


I'm usually an awk guy myself but this seemed worthy

"The Awk Programming Language" (Aho, Kernighan and Weinberger, 1988) is still highly recommended by #awk on freenode IRC.

From the manual:


Cmnd_Alias SHELLS = /usr/bin/sh, /usr/bin/csh, /usr/bin/ksh,\
/usr/local/bin/tcsh, /usr/bin/rsh,\
/usr/local/bin/zsh

%wheel ALL = ALL, !SHELLS


This should help...

This at least works in GNU sed


mute@tiny:~$ sed -n '/key1:/{s/key1: //;h};/^key2:/{H;x;s/\nkey2://p}' input
ABC DEF
GGG HHH


Place it in hold space. Append key2 to hold space, swap...

POSIX sh doesn't support that notation but often you can emulate it with short string using something like this:


$ v=substring
$ echo ${v:1:3}
sh: 2: Bad substitution
$ echo ${v%${v#???}}
sub

In this case the ^I was meant to be inserted by pressing the TAB key on your keyboard. The caret symbol often denotes a control code achieved by holding down control and pressing the next letter.

find "${dir:-.}" -type f -perm u+r | wc -l


See Bash Reference Manual: Shell Parameter Expansion (http://www.gnu.org/software/bash/manual/bashref.html#Shell-Parameter-Expansion).

I'd make a helper function:


in_array() {
local n=$1 h

shift
for h; do
[[ $n = "$h" ]] && return
done

return 1
}

if in_array "$A" "${array[@]}"; then
...

See the following shell session example:


mute@tiny:~$ mkdir shah9250
mute@tiny:~$ cd shah9250/
mute@tiny:~/shah9250$ touch 'file with spaces'
mute@tiny:~/shah9250$ for f in $(ls); do echo...

Don cheated!!

Using same method, different interpreter:


mute@tiny:~$ time gawk -f ./square1 <<< $'90000000000\n4\n1'
90000000000 is the perfect square of 300000
4 is the perfect square of 2...

From the modules info, this uses the normal krb5 libraries. From their manual:


Try that

The problem with max is the > and comparing strings to numbers.
The problem with min is we start with min being 0 and none of those are below zero.

Let's skip lines that don't have 2 columns, and...

Compared to Red Hat Enterprise Linux 7 which is bleeding edge... :D

you read a variable called location and then use tests on store. Is this the whole script?

You also use ` ... ` inside of $( ... ). Both are for command substitution. Neither are necessary because...

A timer. Hardware interrupts are happening all the time which gives a vector for the kernel to regain control without programs cooperatively giving it up. Keyboard or network (as just two examples)...

oy. darn 1-index. Thanks, Don.

but yes, everything outputted by awk goes to cut. cut doesn't have logic like awk does. But awk can determine if it's an odd line and also skip the first 5...

you've a DOS formatted file then. first convert it to unix, or amend the script like so:


awk '{sub(/\r$/,"")}NF {print "<p align=\"justify\"> " $0 " </p>"}' file.txt

Don't use cut. awk equivalent is substr($0,5,595)

try:

awk '!(NR%2) { print substr($0,5,595); next; } 1' FWD-1.fas

I implied you needed to use ksh for that. It should be your default shell, IMO, giving what SCO's documentation lists as available (ksh, csh, sh).

I don't have access to SCO but no sh should have...

That may be the most correct way but a quick way to get the same output is to just append the new value and the field separator inside of $1.


mute@tiny:~$ awk 'NF<5{$1=$1 FS "XXX"}1' FS=, OFS=,...

FIELDWIDTHS seemed to only work on splitting. Then needed printf format specifiers to output them pretty again. This strips whitespace from beginning of all fields.


mute@tiny:~$ gawk -v...