The Shell

... Check whether the file has the set-group-id bit set -h file Check whether the file is a symbolic link (same as –L ) -k file Check whether the file has the sticky bit set -L file Check whether the ... Although the shell used most often with Linux systems is called the Bourne Again Shell (bash), other shells are available as well (such as sh, csh, ksh, tcsh, and others). In...

Ngày tải lên: 29/09/2013, 22:20

... FROM THE SHELL bc The bc utility is an arbitrary-precision calculator. This means the precision of the answer can be set at runtime through the use of the scale operator. Most of the mathematical ... The first argument raised to the power of the second; answer=$(($c**$d)) Order of operations: The default order can be modified by using parentheses, as with the other m...

Ngày tải lên: 05/10/2013, 08:51

... modify the operation of the shell. Table 7.2 lists most of the special characters which the shell recognises and the meaning the shell places on these characters. In the following discussion, the ... happen). After starting up the tcsh shell, I've then exited out of all the new shells and returned to the original bash . Parsing the command line The...

Ngày tải lên: 19/10/2013, 02:20

... • PS1: Contains the shell prompt, $ • PS2: Sets the value of the secondary prompt • LOGNAME: Contains the user’s login name • SHLVL: Contains the shell level of the current shell • SHELL: Stores ... Contains the user’s login name • SHLVL: Contains the shell level that you are currently working in • SHELL: Stores the user’s default shell The env Command • T...

Ngày tải lên: 21/01/2014, 17:20

... Archives 438 Optimizing Shellcode Development 439 Plan the Exploit 439 Write the Shellcode in Inline Assembler 439 Maintain a Shellcode Library 441 Make It Continue Nicely 441 Make the Exploit Stable ... — as the good Count- ess wrote, the symbols of operation are frequently also the symbols of the results of operations.” Of course, she was writing about the difficulty of dis-...

Ngày tải lên: 19/03/2014, 13:43

... that they can be, directly or indirectly, implicated in the control of the crystal orientation [21]. On the other hand, the b- and c-axes of the nacre tablets are oriented in parallel to the growing ... Biocell International, Cardiff, UK). The size of the gold particles was increased further by incubating the shell fragments in a silver-enhancing solution. The samples we...

Ngày tải lên: 22/03/2014, 16:20

... though the comparison was more aligned since both the net- works have users, the differences still outweighed the similarities given the other unique factors in Dharamsala network. Thus, due to the ... malware, but the majority of the traffic on these ports is harmless web surfing. We visualized the results on a map of the world in figure Figure 3. The center of each circle...

Ngày tải lên: 28/03/2014, 22:20

... deglycosylated GISM (B); lane 2, native GISM. The same amount of the sample was applied to each lane. Arrows on the right side of the lanes indi- cate the position of the native and the (A) dephosphorylated and (B) ... spectrum of the GISM fraction. The vertical scale shows the intensity exhibited by %T. Table 1. Amino acid compositions of the 52 kDa component and the...

Ngày tải lên: 30/03/2014, 04:20

... and arrays The Saigon CTT  Example of Script Example of Script $ more example_script #!/bin/bash /usr/bin/nmbd -D /usr/bin/smbd -D The Saigon CTT  The Linux Shell The Linux Shell  Shells : ... Korn (ksh), C shell (csh, tcsh)  Programs start from command line have separate environments : parameters, variables , functions. The Saigon CTT  The Linux Shell The Linux Sh...

Ngày tải lên: 24/06/2013, 01:25

... includes the most popular Unix shells, as shown in Table 13.1. The most popular Linux shell is the BASH shell (the "Bourne Again SHell& quot;), based on the original Unix Bourne shell. The BASH ... the commands, you can reference the current element of the list by means of the shell variable $ variable, where variable is the name specified following the...

Ngày tải lên: 14/12/2013, 13:15