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Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .Dd October 26, 2022 .Dt SCRIPT 1 .Os .Sh NAME .Nm script .Nd make typescript of terminal session .Sh SYNOPSIS .Nm .Op Fl aeFfkqr .Op Fl t Ar time .Op Ar file Op Ar command ... .Nm .Fl p .Op Fl deq .Op Fl T Ar fmt .Op Ar file .Sh DESCRIPTION The .Nm utility makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive session as proof of an assignment, as the typescript file can be printed out later with .Xr lpr 1 . .Pp If the argument .Ar file is given, .Nm saves all dialogue in .Ar file . If no file name is given, the typescript is saved in the file .Pa typescript . .Pp If the argument .Ar command is given, .Nm will run the specified command with an optional argument vector instead of an interactive shell. .Pp The following options are available: .Bl -tag -width "-F pipe" .It Fl a Append the output to .Ar file or .Pa typescript , retaining the prior contents. .It Fl d When playing back a session with the .Fl p flag, do not sleep between records when playing back a timestamped session. .It Fl e Accepted for compatibility with .Em util-linux .Nm . The child command exit status is always the exit status of .Nm . .It Fl F Immediately flush output after each write. This will allow a user to create a named pipe using .Xr mkfifo 1 and another user may watch the live session using a utility like .Xr cat 1 . .It Fl f Create .Ar file.filemon or .Pa typescript.filemon using .Xr filemon 4 . .It Fl k Log keys sent to the program as well as output. .It Fl p Play back a session recorded with the .Fl r flag in real time. .It Fl q Run in quiet mode, omit the start, stop and command status messages. .It Fl r Record a session with input, output, and timestamping. .It Fl t Ar time Specify the interval at which the script output file will be flushed to disk, in seconds. A value of 0 causes .Nm to flush after every character I/O event. The default interval is 30 seconds. .It Fl T Ar fmt Implies .Fl p , but just reports the time-stamp of each output. This is very useful for assessing the timing of events. .Pp If .Ar fmt does not contain any .Ql % characters, it indicates the default format: .Ql %n@ %s [%Y-%m-%d %T]%n , which is useful for both tools and humans to read, should be used. Note that time-stamps will only be output when different from the previous one. .El .Pp The script ends when the forked shell (or command) exits (a .Em control-D to exit the Bourne shell .Pf ( Xr sh 1 ) , and .Em exit , .Em logout or .Em control-D (if .Em ignoreeof is not set) for the C-shell, .Xr csh 1 ) . .Pp Certain interactive commands, such as .Xr vi 1 , create garbage in the typescript file. The .Nm utility works best with commands that do not manipulate the screen. The results are meant to emulate a hardcopy terminal, not an addressable one. .Sh ENVIRONMENT The following environment variables are utilized by .Nm : .Bl -tag -width SCRIPT .It Ev SCRIPT The .Ev SCRIPT environment variable is added to the sub-shell. If .Ev SCRIPT already existed in the users environment, its value is overwritten within the sub-shell. The value of .Ev SCRIPT is the name of the .Ar typescript file. .It Ev SHELL If the variable .Ev SHELL exists, the shell forked by .Nm will be that shell. If .Ev SHELL is not set, the Bourne shell is assumed. .Pq Most shells set this variable automatically . .El .Sh EXAMPLES Record a simple .Xr csh 1 session with no additional details like input, output, and timestamping: .Bd -literal -offset indent $ SHELL=/bin/csh script Script started, output file is typescript % date Tue Jan 5 15:08:10 UTC 2021 % exit exit Script done, output file is typescript .Ed .Pp Now, replay the session recorded in the previous example: .Bd -literal -offset indent $ cat ./typescript Script started on Tue Jan 5 15:08:08 2021 % date Tue Jan 5 15:08:10 UTC 2021 % exit exit Script done on Tue Jan 5 15:08:13 2021 .Ed .Pp Record a .Xr csh 1 session, but this time with additional details like timestamping: .Bd -literal -offset indent $ SHELL=/bin/csh script -r Script started, output file is typescript % date Tue Jan 5 15:17:11 UTC 2021 % exit exit Script done, output file is typescript .Ed .Pp In order to replay a sessions recorded with the .Fl r flag, it is necessary to specify .Fl p .Po .Xr cat 1 will not work because of all the aditional information stored in the session file .Pc . Also, let us use .Fl d to print the whole session at once: .Bd -literal -offset indent $ script -dp ./typescript Script started on Tue Jan 5 15:17:09 2021 % date Tue Jan 5 15:17:11 UTC 2021 % exit exit Script done on Tue Jan 5 15:17:14 2021 .Ed .Sh SEE ALSO .Xr csh 1 .Po for the .Em history mechanism .Pc , .Xr filemon 4 .Sh HISTORY The .Nm command appeared in .Bx 3.0 . .Pp The .Fl d , .Fl p and .Fl r options first appeared in .Nx 2.0 and were ported to .Fx 9.2 . .Sh BUGS The .Nm utility places .Sy everything in the log file, including linefeeds and backspaces. This is not what the naive user expects. .Pp It is not possible to specify a command without also naming the script file because of argument parsing compatibility issues. .Pp When running in .Fl k mode, echo cancelling is far from ideal. The slave terminal mode is checked for ECHO mode to check when to avoid manual echo logging. This does not work when the terminal is in a raw mode where the program being run is doing manual echo. .Pp If .Nm reads zero bytes from the terminal, it switches to a mode when it only attempts to read once a second until there is data to read. This prevents .Nm from spinning on zero-byte reads, but might cause a 1-second delay in processing of user input.