A forward slash seems to just be a default delimiter when it comes to the shell interpreting paths, something to be aware of when inserting variables into paths. For example: -
So be mindful that if the variable is a null string the path will not cause an error if it still evaluates to a valid path.
Using the script: (Called replaceit)
#!/bin/ksh
String=$1
Replace=$2
sed -e "s/${orig}/${new}/g" oldfile.txt > newfile.txt
In oldfile.txt, I'm looking for: getenv("Work")
And change it To: /u/web
I execute the script:
replaceit "getenv(\""Work\"")" /u/web
I'm getting sed... (3 Replies)
how to escape / (forward slash) in a string.
I have following scnerio:
sed s/${var1}{$var2}
var1 and var2 both contain slashes, but sed gives error if there is a slash in var1 or var2. sed is used here to replace var1 with var2.
Thanks in advance (1 Reply)
Hi all,
I need to know way of inserting backward slash before forward slash. My problem is that i need to supply directory path as an argument while invoking cshell script. This argument is further used in script (i.e. sed is used to insert this path in some file). So i need to place \ in front... (2 Replies)
i need to replace '/' forward slash with \/(backward slash follwed by a forward slash) using sed command when the forward slash occurs as a first character in a file..
Tried something like this but doesn't seem to work.
find $1 -print0 | xargs -0 sed -i -e 's/^\//\\\//g'
Can someone... (19 Replies)
hi
hope somebody can help, there seems to be bit on the net about this, but still cant make it work the way i need.
i have a file live this
mm dd ff /dev/name1
mm dd ff /dev/name2
mm dd ff /dev/name3
mm dd ff /dev/name4
i need to update /dev/name1 etc to /newdev/new/name1 etc
so... (5 Replies)
Hi,
I have a tab delimited file "test.txt" like this:
id1 342 C/T
id2 7453 T/A/-/G/C
id3 531 T/C
id4 756 A/T/G
id5 23 A/G
id6 717 T/A/C
id7 718 C/T/A
And so on, with the possible choices for letters being A,C,T,G.
I would like to exclude from my file all the lines that do not have... (3 Replies)
I have some directories I am trying to sort. When I attempt to sort them and they are in this format, everything works great:
file
/vol/trees10
/vol/trees2
/vol/trees7
cat file |sort -ts -k2 -n
/vol/trees2
/vol/trees7
/vol/trees10
This makes thefiles in the order... (9 Replies)
./split2.sh: line 1: split/ssl/pop3s.txt: No such file or directory
sort: cannot read: split/ssl/pop3s.txt: No such file or directory
Hi there,
I am pulling data from the following source:
ssl/http
ssl/http
ssl/http-alt
ssl/https
ssl/https
ssl/https
ssl/https
ssl/https
ssl/https... (3 Replies)
I have a file abc.txt which has records like
456 /home/fgg/abdc.txt
3567 /home/fdss/vfgb.txt
23 /home/asd/dfght.txt
I WANT TO REMOVE STRING UNTIL 3RD OCCURANCE OF FORWARD SLASH
Output should be like
abdc.txt
vfgb.txt
dfght.txt (5 Replies)
Discussion started by: himanshupant
5 Replies
LEARN ABOUT REDHAT
smrsh
SMRSH(8) System Manager's Manual SMRSH(8)NAME
smrsh - restricted shell for sendmail
SYNOPSIS
smrsh -c command
DESCRIPTION
The smrsh program is intended as a replacement for sh for use in the ``prog'' mailer in sendmail(8) configuration files. It sharply limits
the commands that can be run using the ``|program'' syntax of sendmail in order to improve the over all security of your system. Briefly,
even if a ``bad guy'' can get sendmail to run a program without going through an alias or forward file, smrsh limits the set of programs
that he or she can execute.
Briefly, smrsh limits programs to be in a single directory, by default /etc/smrsh, allowing the system administrator to choose the set of
acceptable commands, and to the shell builtin commands ``exec'', ``exit'', and ``echo''. It also rejects any commands with the characters
``', `<', `>', `;', `$', `(', `)', `
' (carriage return), or `
' (newline) on the command line to prevent ``end run'' attacks. It allows
``||'' and ``&&'' to enable commands like: ``"|exec /usr/local/bin/procmail -f- /etc/procmailrcs/user || exit 75"''
Initial pathnames on programs are stripped, so forwarding to ``/usr/ucb/vacation'', ``/usr/bin/vacation'', ``/home/server/mydir/bin/vaca-
tion'', and ``vacation'' all actually forward to ``/etc/smrsh/vacation''.
System administrators should be conservative about populating the /etc/smrsh directory. Reasonable additions are vacation(1), procmail(1),
and the like. No matter how brow-beaten you may be, never include any shell or shell-like program (such as perl(1)) in the /etc/smrsh
directory. Note that this does not restrict the use of shell or perl scripts in the sm.bin directory (using the ``#!'' syntax); it simply
disallows execution of arbitrary programs.
FILES
/etc/smrsh - directory for restricted programs
SEE ALSO sendmail(8)
$Date: 2002/04/25 13:33:40 $ SMRSH(8)