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#!/bin/bash
# spawn.sh
 
 
PIDS=$(pidof sh $0)  # Process IDs of the various instances of this script.
P_array=( $PIDS )    # Put them in an array (why?).
echo $PIDS           # Show process IDs of parent and child processes.
let "instances = ${#P_array[*]} - 1"  # Count elements, less 1.
                                      # Why subtract 1?
 ...

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#!/bin/bash
# stupid-script-tricks.sh: Don't try this at home, folks.
# From "Stupid Script Tricks," Volume I.
 
 
dangerous_variable=`cat /boot/vmlinuz`   # The compressed Linux kernel itself.
 
echo "string-length of \$dangerous_variable = ${#dangerous_variable}"
# string-length of $dangerous_variable = 794151
 ...

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#!/bin/bash
# agram.sh: Playing games with anagrams.
 
# Find anagrams of...
LETTERSET=etaoinshrdlu
FILTER='.......'       # How many letters minimum?
#       1234567
 
anagram "$LETTERSET" | # Find all anagrams of the letterset...
 ...

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#!/bin/bash
# horserace.sh: Very simple horserace simulation.
# Author: Stefano Palmeri
# Used with permission.
 
################################################################
#  Goals of the script:
#  playing with escape sequences and terminal colors.
#
 ...

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#!/bin/bash
# Draw-box.sh: Drawing a box using ASCII characters.
 
# Script by Stefano Palmeri, with minor editing by document author.
# Minor edits suggested by Jim Angstadt.
# Used in the ABS Guide with permission.
 
 
######################################################################
 ...

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wc -c "hola"

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cat /etc/passwd

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2
cat /etc/user
cat /etc/group

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2
cat /etc/users
cat /etc/groups

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#!/bin/bash
echo $USER
echo $PWD
env

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#!/bin/bash
echo $USER
echo $PWD

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2
#!/bin/bash
echo $ENV

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#!/bin/bash
while true
do
        read line
        if [ $line -eq 42 ]
        then 
                exit 0
        fi
        echo ${line}

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2
$test = "a1 a2 a3"
grep a3 $test

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#include <stdio.h>
 
 
#define LST “ls”
 
int main()
{
int pid, k=5, status;
printf( “ Stoinostta na k = %d;”, k-2 );
 ...

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#!/bin/bash
while true
do
        read line
        if [ $line -eq 42 ]
        then 
                exit 0
        fi
        echo $line

1
echo $#

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for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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9
for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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9
for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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9
for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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9
for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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9
for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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9
for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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9
for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -z “$listpar“ ]
then
echo 867553435
 ...

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9
for var in a1 a2 a3
do
set $var
done
shift
listpar=` echo $* `
if [ -n “$listpar“ ]
then
echo 867553435
 ...